BMW N54

{{Infobox automobile engine

| name = BMW N54 engine

| image = JK N54B30.jpg

| manufacturer =

| production = 2006–2016

| configuration = Straight-6

| block = Aluminium

| head = Aluminium

| turbocharger = Twin-turbo

| valvetrain = DOHC, with VVT

| timing = Chain

| fueltype = Petrol

| displacement = {{convert|2979|cc|L|1|order=flip|abbr=on}}

| bore = {{convert|84|mm|in|1|abbr=on}}

| stroke = {{convert|89.6|mm|in|1|abbr=on}}

| predecessor = BMW M54

| successor = BMW N55

}}

The BMW N54 is a twin-turbocharged straight-six petrol engine that was produced from 2006 to 2016.{{Cite web |url=http://wardsautoworld.com/ar/auto_direct_injection_turbo/ |title=Direct Injection, Turbo Pay Off For BMW |website=www.wardsautoworld.com |access-date=2010-11-20 |archive-url=https://web.archive.org/web/20110728081933/http://wardsautoworld.com/ar/auto_direct_injection_turbo/ |archive-date=2011-07-28 |url-status=dead }} It is BMW's first mass-produced turbocharged petrol engine and BMW's first turbocharged petrol engine since the limited-production BMW M106 was discontinued in 1986. The N54 debuted at the 2006 Geneva Motor Show and was launched in the 335i model of the E90/E91/E92/E93 3 Series range.

Following the introduction of its BMW N55 successor in 2009, the N54 began to be phased out. The final model powered by the N54 is the E89 Z4 roadster, which was produced until 2016.

The N54 has won six straight International Engine of the Year awards{{Cite web|url=http://www.bimmerboost.com/content.php?1213-BMW-takes-home-4-awards-from-International-Engine-of-the-Year-competition-N54-and-S65-continue-dominance|title=BMW takes home 4 awards from International Engine of the Year competition - N54 and S65 continue dominance|website=bimmerboost.com|access-date=2012-10-01|archive-date=2013-05-18|archive-url=https://web.archive.org/web/20130518054341/http://www.bimmerboost.com/content.php?1213-BMW-takes-home-4-awards-from-International-Engine-of-the-Year-competition-N54-and-S65-continue-dominance|url-status=live}} and three straight Ward's 10 Best Engines awards.{{Cite web|url=http://wardsauto.com/news-amp-analysis/bmws-newest-i-6-better-not-bigger|title=BMW's Newest I-6 Better, Not Bigger|website=wardsauto.com|access-date=2012-08-31|archive-date=2014-11-21|archive-url=https://web.archive.org/web/20141121073622/http://wardsauto.com/news-amp-analysis/bmws-newest-i-6-better-not-bigger|url-status=live}}

There is no BMW M version of the N54, however a high-output version of the N54 is used in the 1 Series M Coupe, Z4 35iS and 335iS models.

Design

The N54 was produced alongside the naturally aspirated BMW N53 engine; both engines have direct injection, double-VANOS (variable valve timing), an open-deck engine block{{cite web |title=Part cross-reference - 13537537319 Sensor, high-pressure |url=https://www.realoem.com/bmw/en/partxref?id=VE71-EUR-06-2008-E90-BMW-330i&mg=13&sg=15&diagId=13_1182&q=13537537319&series=E90 |website=www.realoem.com |access-date=17 August 2019}}{{cite web|title=BMW N54 engine|url=http://australiancar.reviews/bmw_N54.php|website=www.australiancar.reviews|access-date=8 December 2017|archive-date=10 December 2017|archive-url=https://web.archive.org/web/20171210231824/http://australiancar.reviews/bmw_N54.php|url-status=live}} and an electric water pump.{{Cite web |url=http://motorengine.blogspot.com.au/2008/11/bmw-n54-inline-6-twin-turbo.html |title=Motor Engine: BMW N54 inline 6 twin turbo |website=motorengine.blogspot.com.au |access-date=2012-05-26 |archive-date=2013-03-25 |archive-url=https://web.archive.org/web/20130325083958/http://motorengine.blogspot.com.au/2008/11/bmw-n54-inline-6-twin-turbo.html |url-status=live }}{{cite web|title=Engine Guide BMW N54/N55|url=https://drive-my.com/en/tech/item/2193-engine-guide-bmw-n54-n55.html|website=drive.com|date=4 May 2015 |language=en-gb|access-date=2015-12-24|archive-date=2019-10-14|archive-url=https://web.archive.org/web/20191014092423/https://drive-my.com/en/tech/item/2193-engine-guide-bmw-n54-n55.html|url-status=live}}{{cite web|title=5' F10 530i Waterpump - Thermostat|url=http://www.realoem.com/bmw/en/showparts?id=XH71-EUR-03-2012-F10-BMW-530i&diagId=11_4522|website=www.realoem.com|access-date=8 December 2017|archive-date=10 December 2017|archive-url=https://web.archive.org/web/20171210180443/http://www.realoem.com/bmw/en/showparts?id=XH71-EUR-03-2012-F10-BMW-530i&diagId=11_4522|url-status=live}} Since the N54 is based on the older BMW M54 engine, it has an aluminium engine block (instead of the magnesium alloy used by the N53), a displacement of {{convert|2979|cc|cuin|1|abbr=on}} and does not have valvetronic (variable valve lift).{{cite web|title=BMW N54 and N55 Six Cylinder Turbocharged Engines|url=http://www.unixnerd.demon.co.uk/n54.html|website=www.unixnerd.demon.co.uk|access-date=2015-11-06|archive-date=2020-02-20|archive-url=https://web.archive.org/web/20200220005506/http://www.unixnerd.demon.co.uk/n54.html|url-status=dead}}

Turbocharging is a key difference between the N54 and BMW's previous straight-six engines. The N54 has two small low-pressure turbochargers to minimise turbo lag. BMW's marketed the twin-turbo as "TwinPower Turbo",{{cite web|title=BMW EfficientDynamics: Petrol engines with BMW TwinPower Turbo Technology|url=http://www.bmw.com/com/en/insights/technology/efficientdynamics/phase_1/measures_petrol_engines.html|website=www.bmw.com|access-date=2012-08-31|archive-date=2012-09-15|archive-url=https://web.archive.org/web/20120915041808/http://www.bmw.com/com/en/insights/technology/efficientdynamics/phase_1/measures_petrol_engines.html|url-status=live}} although the term has since been used for engines which have a single twin-scroll turbocharger.{{cite web|title=2017 BMW X4 M40i Instrumented Test|url=https://www.caranddriver.com/reviews/2017-bmw-x4-m40i-test-review|website=www.caranddriver.com|date=16 November 2016 |access-date=10 December 2017|archive-date=10 December 2017|archive-url=https://web.archive.org/web/20171210232011/https://www.caranddriver.com/reviews/2017-bmw-x4-m40i-test-review|url-status=live}}

{{cite web|title=2011 BMW 335i Sedan|url=http://www.caranddriver.com/reviews/2011-bmw-335i-sedan-first-drive-review|website=www.caranddriver.com|archive-url=https://web.archive.org/web/20160310030615/http://www.caranddriver.com/reviews/2011-bmw-335i-sedan-first-drive-review|archive-date=10 March 2016|url-status=dead}} The boost pressure is {{convert|8|psi|bar|abbr=on}} and an air-to-air intercooler is used. Compared with the naturally aspirated BMW N52 that it replaced as BMW's highest performance six-cylinder engine, the N54 produces an additional {{convert|45|bhp|kW|0|abbr=on|order=flip}} and {{convert|80|lbft|Nm|0|abbr=on|order=flip}}.{{cite web|title=2008 BMW 5-series - First Drive Review|date=May 2007 |url=http://www.caranddriver.com/reviews/2008-bmw-5-series-first-drive-review|access-date=5 January 2017|archive-date=10 March 2017|archive-url=https://web.archive.org/web/20170310212717/http://www.caranddriver.com/reviews/2008-bmw-5-series-first-drive-review|url-status=live}}

The N54's direct injection system (called "High Precision Injection" by BMW{{cite web|title=BMW Technology Guide: High Precision Injection|url=http://www.bmw.com/com/en/insights/technology/technology_guide/articles/mm_high_precision_injection.html|website=www.bmw.com|access-date=2012-08-31|archive-date=2012-10-13|archive-url=https://web.archive.org/web/20121013193437/http://www.bmw.com/com/en/insights/technology/technology_guide/articles/mm_high_precision_injection.html|url-status=live}}) uses piezo injectors. Its N55 successor uses solenoid-type injectors, because the piezo injectors are more expensive and not reaching their full potential to obtain the "lean burn" benefit.{{cite web|title=BMW's Newest I-6 Better, Not Bigger|url=http://wardsauto.com/news-amp-analysis/bmws-newest-i-6-better-not-bigger|website=wardsauto.com|access-date=2012-08-31|archive-date=2014-11-21|archive-url=https://web.archive.org/web/20141121073622/http://wardsauto.com/news-amp-analysis/bmws-newest-i-6-better-not-bigger|url-status=live}}

Versions

Version	Displacement	Power	Torque	Year
class=wikitable sortable
rowspan=3\|N54B30	rowspan=6\|{{convert\|2979\|cc\|cuin\|1\|abbr=on}}	{{convert\|225\|kW\|bhp\|0\|abbr=on}} at 5,800 rpm	{{convert\|400\|Nm\|lbft\|0\|abbr=on}} at 1,400-5,000 rpm	2006-2010
{{convert\|240\|kW\|bhp\|0\|abbr=on}} at 5,800 rpm	rowspan=2\|{{convert\|450\|Nm\|lbft\|0\|abbr=on}} at 1,500-4,500 rpm	2008-2013
{{convert\|250\|kW\|bhp\|0\|abbr=on}} at 5,900 rpm	2011-2016
rowspan=3\|Alpina	{{convert\|265\|kW\|bhp\|0\|abbr=on}} at 5,500-6,000 rpm	{{convert\|500\|Nm\|lbft\|0\|abbr=on}} at 3,800-5,000 rpm	2007-2010
{{convert\|294\|kW\|bhp\|0\|abbr=on}} at 6,000 rpm	rowspan=2\|{{convert\|540\|Nm\|lbft\|0\|abbr=on}} at 4,500 rpm	2010-2013
{{convert\|300\|kW\|bhp\|0\|abbr=on}} at 6,000 rpm	2012-2013

All versions have a bore of {{convert|84.0|mm|in|2|abbr=on}}, a stroke of {{convert|89.6|mm|in|2|abbr=on}}, a compression ratio of 10.2:1 and the redline is 7000 rpm.

= 225 kW version =

The initial version of the N54 is officially rated at {{convert|225|kW|bhp|0|abbr=on}} and 400 N·m.{{Cite web|url=http://www.bmwblog.com/2009/05/26/the-latest-bmw-engine-n55-found-in-the-bmw-5-series-gt/#more-14525 |title=The latest BMW engine: N55 - found in the BMW 5 Series GT |website=www.bmwblog.com|date=26 May 2009 }} However, these figures are considered to be under-rated,{{cite web|title=First Drive Review - 2011 BMW 335i Sedan|url=https://www.caranddriver.com/reviews/2011-bmw-335i-sedan-first-drive-review|website=www.caranddriver.com|date=14 May 2010 |access-date=16 December 2017|archive-date=11 December 2017|archive-url=https://web.archive.org/web/20171211053523/https://www.caranddriver.com/reviews/2011-bmw-335i-sedan-first-drive-review|url-status=live}} and independent testing has resulted in estimates of {{Convert|311|bhp|kW|0|abbr=on|order=flip}} and {{convert|422|Nm|lbft|0|abbr=on}}.{{Cite web|url=http://www.dinancars.com/assets/File/Press%20Release%20335i%20software%20REV%20A%20EDITED.pdf |title=Press release- Performance Engine Software for BMW 335 Models |website=dinancars.com |archive-url= https://web.archive.org/web/20100920155345/http://dinancars.com/assets/File/Press%20Release%20335i%20software%20REV%20A%20EDITED.pdf| archive-date= 20 September 2010}}

Applications:{{cite web|title=BMW 335i Coupe (2006) review|url=http://www.carmagazine.co.uk/car-reviews/bmw/bmw-335i-coupe-2006-review/|website=www.carmagazine.co.uk|access-date=16 December 2017|archive-date=16 December 2017|archive-url=https://web.archive.org/web/20171216201309/http://www.carmagazine.co.uk/car-reviews/bmw/bmw-335i-coupe-2006-review/|url-status=live}}{{cite web|title=2009 BMW 5-series E61 phase-II (Touring) Wagon X (4WD) full range specs|url=http://www.automobile-catalog.com/make/bmw/5-series_e60_e61/5-series_e61-2_touring_x/2009.html|website=www.automobile-catalog.com|access-date=16 December 2017}}

2006–2010 E90/E91/E92/E93 335i
2007–2010 E60/E61 535i
2007–2010 E82/E88 135i
2008–2010 E71 X6 xDrive35i
2009–2016 E89 Z4 sDrive35i

= 240 kW version =

A variant of the N54B30 with higher peak power and torque is used in the 2008-2012 740i{{Cite web|url=http://www.caranddriver.com/reviews/car/10q2/2011_bmw_740i_740li-first_drive_review |title=2011 BMW 740i / 740Li - First Drive Review|website=www.caranddriver.com|date=14 May 2010 | archive-url= https://web.archive.org/web/20100916010948/http://www.caranddriver.com/reviews/car/10q2/2011_bmw_740i_740li-first_drive_review| archive-date= 16 September 2010 | url-status= live}} and E92 335is.

Applications:{{Cite web|url=http://www.insideline.com/bmw/3-series/2011/2011-bmw-335is-first-drive.html |title=2011 BMW 335is First Drive |publisher=Insideline.com |archive-url=https://web.archive.org/web/20100921045125/http://www.insideline.com/bmw/3-series/2011/2011-bmw-335is-first-drive.html |archive-date=21 September 2010 |url-status=live }}{{cite web|title=2010 BMW 335is Coupé|url=http://www.carfolio.com/specifications/models/car/?car=209495|website=carfolio.com|access-date=2016-03-07|archive-date=2016-03-10|archive-url=https://web.archive.org/web/20160310231911/http://www.carfolio.com/specifications/models/car/?car=209495|url-status=live}}{{cite web |url=http://paultan.org/archives/2008/07/05/new-bmw-7-series-f01-specifications-and-photos/ |title=New BMW 7-Series F01 Specifications and Photos |website=www.paultan.org |access-date=2008-07-07 |archive-date=2012-07-17 |archive-url=https://web.archive.org/web/20120717103130/http://paultan.org/2008/07/05/new-bmw-7-series-f01-specifications-and-photos/ |url-status=live }}

2008–2012 F01 740i
2011–2013 E92/E93 335is

= 250 kW version =

The most powerful version of the N54 is found in the E82 1 Series M Coupe and the E89 Z4 sDrive 35is.

Applications:{{Cite web |url=http://www.caradvice.com.au/158068/bmw-1-series-m-coupe-review-road-test/ |title=BMW 1-Series M Coupe Review |website=www.caradvice.com.au |access-date=2012-05-26 |archive-date=2012-05-14 |archive-url=https://web.archive.org/web/20120514181248/http://www.caradvice.com.au/158068/bmw-1-series-m-coupe-review-road-test/ |url-status=live }}{{Cite web |url=http://blogs.insideline.com/straightline/2011/05/dyno-tested-2011-bmw-1-series-m-coupe.html |title=Dyno-Tested: 2011 BMW 1 Series M Coupe |website=www.insideline.com |access-date=2012-05-26 |archive-date=2012-11-24 |archive-url=https://web.archive.org/web/20121124045005/http://blogs.insideline.com/straightline/2011/05/dyno-tested-2011-bmw-1-series-m-coupe.html |url-status=live }}

2011 E82 1 Series M Coupe
2011–2016 E89 Z4 sDrive35is

= Alpina =

Biturbo engine by Alpina based on the N54B30, with upgrades including the engine control unit, oil cooler and pistons.

== 265 kW version ==

This is Alpina's initial version of the N54, producing {{convert|265|kW|bhp|0|abbr=on}}.{{cite web |title=BMW 3 Series E90/91/92/93: ALPINA Automobiles |url=https://www.alpina-automobiles.com/en/product-world/model-history/bmw-3-series/bmw-3-series-e90919293/ |website=www.alpina-automobiles.com |access-date=18 November 2018 |archive-date=18 November 2018 |archive-url=https://web.archive.org/web/20181118205608/https://www.alpina-automobiles.com/en/product-world/model-history/bmw-3-series/bmw-3-series-e90919293/ |url-status=live }}

Applications:

2007–2010 Alpina B3 (E90)

== 294 kW version ==

Applications:

2010–2013 Alpina B3 S

== 300 kW version ==

Applications:

2012–2013 Alpina B3 GT3

Critical reception

Car & Driver noted the N54 had minimal turbo lag and "in feel and sound the twin-turbo could pass for naturally aspirated".{{Cite web |url=http://www.caranddriver.com/reviews/2007-bmw-335i-coupe-road-test |title=2007 BMW 335i Coupe - Road Test |website=www.caranddriver.com |access-date=2012-07-26 |archive-date=2012-10-02 |archive-url=https://web.archive.org/web/20121002134225/http://www.caranddriver.com/reviews/2007-bmw-335i-coupe-road-test |url-status=live }} The N54-engined F01 740i was also praised for its linear power delivery.{{Cite web|url=http://www.automobilemag.com/reviews/editors_notebook/1112_2012_bmw_740i_sedan/viewall.html|title=2012 BMW 740i Sedan - Editors' Notebook|website=www.automobilemag.com|access-date=5 January 2017|archive-date=14 June 2013|archive-url=https://web.archive.org/web/20130614224116/http://www.automobilemag.com/reviews/editors_notebook/1112_2012_bmw_740i_sedan/viewall.html|url-status=live}}

Comparing the N54-engined E60 535i with the 550i (using a 4.8–litre naturally aspirated V8), one reviewer noted that the V8 model had more torque but was "only marginally quicker than the 535i" and that the additional weight of the V8 engine was noticeable on twisty mountain roads.{{cite web|title=V-8 with Extra Weight- 2008 BMW 5-series|url=http://www.caranddriver.com/reviews/2008-bmw-5-series-first-drive-review-v-8-with-extra-weight-page-1|website=www.caranddriver.com|archive-url=https://web.archive.org/web/20160114220029/http://www.caranddriver.com/reviews/2008-bmw-5-series-first-drive-review-v-8-with-extra-weight-page-1|archive-date=14 January 2016|url-status=dead}}

High-Pressure Fuel Pump failures

In the United States, some N54 engines experienced failures of the High Pressure Fuel Pump (HPFP), resulting a class action lawsuit, a voluntary recall and an extended warranty for the HPFP.

Failure of the HPFP can cause the engine to suddenly stop functioning, which has caused several near-misses on highways.{{cite web |last=Cohan |first=Peter |url=https://www.aol.com/2010/07/23/bmws-engine-problems-a-safety-risk-to-drivers-and-the-compa/ |title=BMW's Engine Problems: A Safety Risk to Drivers – and the Company? |website=www.aol.com |access-date=16 December 2017 |archive-date=22 December 2017 |archive-url=https://web.archive.org/web/20171222050753/https://www.aol.com/2010/07/23/bmws-engine-problems-a-safety-risk-to-drivers-and-the-compa/ |url-status=live }} BMW was aware of HPFP problems, describing them in internal Technical Service Bulletins as "driveability problems".

In April 2009, a class action suit was filed against BMW in connection with HPFP failures.{{Cite web |url=http://www.bimmerfest.com/news/489840/kershaw,-cutter-&-ratinoff-takes-on-bmw-in-class-action-suit-regarding-defective-fuel |title=Kershaw, Cutter & Ratinoff takes on BMW in class action suit regarding defective HPFP |website=www.bimmerfest.com |access-date=16 December 2017 |archive-date=13 September 2017 |archive-url=https://web.archive.org/web/20170913044119/http://www.bimmerfest.com/news/489840/kershaw%2C-cutter-%26-ratinoff-takes-on-bmw-in-class-action-suit-regarding-defective-fuel |url-status=live }}{{Cite web |url=https://www.scribd.com/doc/17233560/Bmw-Law-Suit-Hpfp |title=Jay Alan Morane vs BMW North America- April 10 2009 |website=www.scribd.com |access-date=2017-09-08 |archive-date=2016-03-06 |archive-url=https://web.archive.org/web/20160306085426/https://www.scribd.com/doc/17233560/Bmw-Law-Suit-Hpfp |url-status=live }} BMW settled the suit in June 2010. On 26 October 2010, following an ABC News story about HPFP failures,{{Cite web|url=http://www.autoblog.com/2010/10/26/abc-news-airs-big-expose-on-bmw-n54-engine-problems-lawsuits-w/|title=ABC News airs big expose on BMW N54 engine problems, lawsuits|website=www.autoblog.com|access-date=2010-12-24|archive-date=2010-12-29|archive-url=https://web.archive.org/web/20101229065944/http://www.autoblog.com/2010/10/26/abc-news-airs-big-expose-on-bmw-n54-engine-problems-lawsuits-w/|url-status=live}} BMW announced a recall of vehicles with the pump in question from manufacturing years 2007–2010.{{cite web|url=http://consumerist.com/2010/10/bmw-recalls-150000-cars-over-fuel-pump-failures.html|title=BMW Recalls 150,000 Cars Over Fuel Pump Failures|last=Morran|first=Chris|date=2010-10-26|publisher=Consumerist|access-date=2011-06-22|archive-date=2011-09-21|archive-url=https://web.archive.org/web/20110921034211/http://consumerist.com/2010/10/bmw-recalls-150000-cars-over-fuel-pump-failures.html|url-status=live}}{{Cite web |url=http://consumerist.com/2010/10/bmw-recalls-150000-cars-over-fuel-pump-failures.html |title=Consumerist: BMW Recalls 150,000 Cars Over Fuel Pump Failures |date=26 October 2010 |access-date=2010-10-26 |archive-date=2011-09-21 |archive-url=https://web.archive.org/web/20110921034211/http://consumerist.com/2010/10/bmw-recalls-150000-cars-over-fuel-pump-failures.html |url-status=live }} The recall was applied to 130,000 cars, resulting in the replacement of the HPFP in approximately 40,000 of these cars.{{cite web|title=BMW Recalls Some Turbo-Charged Cars Following ABC News Investigation|url=https://abcnews.go.com/TheLaw/bmw-admits-fuel-pump-flaw-turbo-cars/story?id=11968495|website=www.abcnews.go.com|access-date=16 December 2017|archive-date=22 December 2017|archive-url=https://web.archive.org/web/20171222050714/http://abcnews.go.com/TheLaw/bmw-admits-fuel-pump-flaw-turbo-cars/story?id=11968495|url-status=live}}

In the United States, the warranty period for the HPFP was increased to 10 years and {{convert|120000|mi|km|abbr=on}}.{{cite web|title=High Pressure Fuel Pump for Turbo vehicles - BMW 335i, 335xi|url=https://wiki.bentleypublishers.com/display/tech/High+Pressure+Fuel+Pump+for+Turbo+vehicles+-+BMW+335i%2C+335xi;jsessionid=DDB9D9531E55585798E62F0151E24444|website=www.bentleypublishers.com|access-date=16 December 2017|archive-date=22 December 2017|archive-url=https://web.archive.org/web/20171222050837/https://wiki.bentleypublishers.com/display/tech/High+Pressure+Fuel+Pump+for+Turbo+vehicles+-+BMW+335i%2C+335xi;jsessionid=DDB9D9531E55585798E62F0151E24444|url-status=live}}

On some cars, the HPFP was replaced multiple times without resolving the issue, potentially leading to the car being refunded under the Lemon Laws in some states.{{Cite web |url=http://www.bimmerfest.com/forums/showthread.php?p=3673861#post3673861 |title=What's the deal with all these Lemon/Buyback 335i's? |website=www.bimmerfest.com |access-date=16 December 2017 |archive-date=22 December 2017 |archive-url=https://web.archive.org/web/20171222050704/http://www.bimmerfest.com/forums/showthread.php?p=3673861#post3673861 |url-status=live }}

Extended warranty in the United States

The High Pressure Fuel Pump issue caused BMW North America to extend the warranty for this pump to 10 years or {{convert|120000|mi|km|abbr=on}}.

The warranty period for the fuel injectors was also increased, to 10 years or {{convert|120000|mi|km|abbr=on}}.{{cite web|title=N54: The best Plugs, Injectors and Coils Thread|url=https://bmw.spoolstreet.com/threads/n54-the-best-plugs-injectors-and-coils-thread.1094/|website=www.spoolstreet.com|access-date=16 December 2017|archive-date=31 August 2017|archive-url=https://web.archive.org/web/20170831083949/https://bmw.spoolstreet.com/threads/n54-the-best-plugs-injectors-and-coils-thread.1094/|url-status=live}}{{cite web|title=BMW Fuel Injector – Ext'd Warranty, Reimbursement|url=http://www.brrperformance.com/blog/?p=3589|website=www.brrperformance.com|access-date=16 December 2017|archive-date=22 December 2017|archive-url=https://web.archive.org/web/20171222052400/http://www.brrperformance.com/blog/?p=3589|url-status=live}} An updated design for the fuel injectors was also introduced.{{cite web|title=N63, N74, N54 Injector Update|url=https://www.ultimatebimmerservice.com/n63-n74-n54-injector-update/|website=www.ultimatebimmerservice.com|access-date=16 December 2017|archive-date=22 December 2017|archive-url=https://web.archive.org/web/20171222052754/https://www.ultimatebimmerservice.com/n63-n74-n54-injector-update/|url-status=live}}{{cite web|title=N53 330i Powweerrr loss|url=http://www.e90post.com/forums/showthread.php?t=1238464|website=www.e90post.com|access-date=16 December 2017|archive-date=31 August 2017|archive-url=https://web.archive.org/web/20170831084551/http://www.e90post.com/forums/showthread.php?t=1238464|url-status=live}}

Due to problems with rattling wastegates caused by premature bushing wear,{{cite web|title=BMW Turbo Upgrades For The Infamous N54|url=https://foreignaffairsmotorsports.com/bmw-turbo-upgrades-infamous-n54/|website=www.foreignaffairsmotorsports.com|access-date=16 December 2017|archive-date=22 December 2017|archive-url=https://web.archive.org/web/20171222053052/https://foreignaffairsmotorsports.com/bmw-turbo-upgrades-infamous-n54/|url-status=live}}{{cite web|title=BMW 135i 335i 535i N54 Wastegate Rattle Fix|url=http://turbolabofamerica.com/category/bmw-135i-335i-535i-wastegate-rattle-repair-fix-diy/|website=www.turbolabofamerica.com|access-date=16 December 2017|archive-date=22 December 2017|archive-url=https://web.archive.org/web/20171222051337/http://turbolabofamerica.com/category/bmw-135i-335i-535i-wastegate-rattle-repair-fix-diy/|url-status=live}} BMW extended the warranty period for wastegate-related issues to 8 years or {{convert|82000|mi|km|abbr=on}}.{{Cite web|url=http://www.bmwblog.com/2012/08/16/n54-engine-warranty-extended-to-8-years82000-miles-wastegates-only/|title=N54 Engine warranty extended to 8 Years/82,000 Miles (Wastegates Only)|date=2012-08-16|website=www.bmwblog.com |access-date=4 October 2016}}

These warranty extensions only apply to the United States.

References

N54

Category:Straight-six engines

Category:Gasoline engines by model

Version	Displacement	Power	Torque	Year
class=wikitable sortable
rowspan=3\|N54B30	rowspan=6\|{{convert\|2979\|cc\|cuin\|1\|abbr=on}}	{{convert\|225\|kW\|bhp\|0\|abbr=on}} at 5,800 rpm	{{convert\|400\|Nm\|lbft\|0\|abbr=on}} at 1,400-5,000 rpm	2006-2010
{{convert\|240\|kW\|bhp\|0\|abbr=on}} at 5,800 rpm	rowspan=2\|{{convert\|450\|Nm\|lbft\|0\|abbr=on}} at 1,500-4,500 rpm	2008-2013
{{convert\|250\|kW\|bhp\|0\|abbr=on}} at 5,900 rpm	2011-2016
rowspan=3\|Alpina	{{convert\|265\|kW\|bhp\|0\|abbr=on}} at 5,500-6,000 rpm	{{convert\|500\|Nm\|lbft\|0\|abbr=on}} at 3,800-5,000 rpm	2007-2010
{{convert\|294\|kW\|bhp\|0\|abbr=on}} at 6,000 rpm	rowspan=2\|{{convert\|540\|Nm\|lbft\|0\|abbr=on}} at 4,500 rpm	2010-2013
{{convert\|300\|kW\|bhp\|0\|abbr=on}} at 6,000 rpm	2012-2013

BMW N54

Design

Versions

= 225 kW version =

= 240 kW version =

= 250 kW version =

= Alpina =

== 265 kW version ==

== 294 kW version ==

== 300 kW version ==

Critical reception

High-Pressure Fuel Pump failures

Extended warranty in the United States

See also

References