Daewoo S-TEC engine#S-TEC

{{Infobox automobile engine

| name = Daewoo S-TEC engine

| aka = {{ubl |M-TEC|P-TEC|SMARTECH II}}

| manufacturer = Daewoo Motors (1991-2002)
General Motors (2002-present)

| production = 1991-present

| successor = Small Gasoline Engine

| configuration = Inline-3, Inline-4

| block = Cast iron

| head = Aluminum

| valvetrain = {{ubl |DOHC 4 valves x cyl.|SOHC 2 valves x cyl.}}

| turbocharger = Mitsubishi Heavy Industries one-stage single-scroll (Daewoo S-TEC III LL5 versions)

| fuelsystem = Fuel injection

| fueltype = {{ubl |Gasoline|LPG}}

| oilsystem = Wet sump

| coolingsystem = Water-cooled

| displacement = {{Unbulleted list|{{convert|796|cc|L|1|order=flip|abbr=on}}|{{convert|995|cc|L|1|order=flip|abbr=on}}|{{convert|1150|cc|L|1|order=flip|abbr=on}}|{{convert|1199|cc|L|1|order=flip|abbr=on}}|{{convert|1206|cc|L|1|order=flip|abbr=on}}|{{convert|1249|cc|L|1|order=flip|abbr=on}}|{{convert|1399|cc|L|1|order=flip|abbr=on}}|{{convert|1451|cc|L|1|order=flip|abbr=on}}|{{convert|1485|cc|L|1|order=flip|abbr=on}}}}

| bore = {{Unbulleted list|{{convert|68.5|mm|in|2|abbr=on}}|{{convert|69.7|mm|in|2|abbr=on}}|{{convert|70.5|mm|in|2|abbr=on}}|{{convert|74.71|mm|in|2|abbr=on}}}}

| stroke = {{Unbulleted list|{{convert|67.5|mm|in|2|abbr=on}}|{{convert|72|mm|in|2|abbr=on}}|{{convert|78|mm|in|2|abbr=on}}|{{convert|79|mm|in|2|abbr=on}}|{{convert|80|mm|in|2|abbr=on}}|{{convert|84.7|mm|in|2|abbr=on}}}}

| power = {{convert|36-110|kW|PS hp|abbr=on|0}}

| torque = {{convert|71.5-230|Nm|lbft|abbr=on}}

| emissions control = EGR

| compression = 9.3:1, 9.5:1, 9.8:1, 10.2:1, 10.5:1

}}

S-TEC or M-TEC is a low-displacement engine range co-developed by Suzuki and Daewoo Motors for use in micro and subcompact cars. The original version was a license-built version of the Suzuki F8B engine; later generations were derived from the original design in South Korea.

S-TEC

The first model was {{convert|796|cc|L|1|order=flip|abbr=on}} SOHC straight-three engine based on the powertrain of the Suzuki Alto.

In 2002, the range was extended to {{convert|995|cc|L|1|order=flip|abbr=on}} and {{convert|1150|cc|L|1|order=flip|abbr=on}} inline-four engines and updated with EGR valve to reduce emission. A new engine plant for the updated model T4 was built. The 1.0 version is used in Chevrolet Matiz and the 1.2 in the European Chevrolet Kalos.

In 2004 the 0.8 and 1.0 engines were updated again. New intake and exhaust systems, along with low-friction aluminum cam followers with rollers were added, resulting in better economy.

Cylinders	Displacement	Bore	Stroke	Compression Ratio	Power	Torque
class=wikitable
I3	{{convert\|796\|cc\|L\|1\|order=flip\|abbr=on}}	rowspan=3\|{{convert\|68.5\|mm\|in\|2\|abbr=on}}	{{convert\|72\|mm\|in\|2\|abbr=on}}		{{convert\|36\|kW\|PS hp\|abbr=on\|0}} at 6000 rpm	{{convert\|71.5\|Nm\|lbft\|abbr=on}} at 4000 rpm
I4	\|{{convert\|995\|cc\|L\|1\|order=flip\|abbr=on}}	{{convert\|67.5\|mm\|in\|2\|abbr=on}}	rowspan=2\|9.3:1	{{convert\|48.5\|kW\|PS hp\|abbr=on\|0}} at 5400 rpm	{{convert\|91\|Nm\|lbft\|0\|abbr=on}} at 4200 rpm
I4	\|{{convert\|1150\|cc\|L\|1\|order=flip\|abbr=on}}	{{convert\|78\|mm\|in\|2\|abbr=on}}	{{convert\|53\|kW\|PS hp\|abbr=on\|0}} at 5400 rpm	{{convert\|104\|Nm\|lbft\|0\|abbr=on}} at 4400 rpm

Applications:

S-TEC II

For 2008, a new {{convert|1206|cc|L|1|order=flip|abbr=on}} version dubbed S-TEC II is introduced with the new Chevrolet Aveo hatchback; new features include chain-driven 16-valve DOHC valvetrain and variable intake geometry. The 1.0 L version has been introduced with the 2010 Chevrolet Spark. A 1.2 L LPG/gasoline version was developed exclusively for the India market; called SMARTECH II and used in the 2010 Chevrolet Beat. Introduced in 2013, the 1.2 L version is available in the United States version of the Chevrolet Spark.

Name	Displacement	Bore	Stroke	Compression Ratio	Power	Torque
class=wikitable
	\|{{convert\|995\|cc\|L\|1\|order=flip\|abbr=on}}	{{convert\|68.5\|mm\|2\|abbr=on}}	{{convert\|67.5\|mm\|2\|abbr=on}}	9.8:1	{{convert\|50\|kW\|PS hp\|abbr=on\|0}} at 6400 rpm	{{convert\|93\|Nm\|lbft\|0\|abbr=on}} at 4800 rpm
\|LMU	{{convert\|1206\|cc\|L\|1\|order=flip\|abbr=on}}	{{convert\|69.7\|mm\|in\|2\|abbr=on}}	{{convert\|79\|mm\|in\|2\|abbr=on}}	10.5:1	{{convert\|62\|kW\|PS hp\|abbr=on\|0}} at 6000 rpm	{{convert\|114\|Nm\|lbft\|0\|abbr=on}} at 3800-4400 rpm
\|LKY	1.2 L			9.8:1	{{convert\|60\|kW\|PS hp\|abbr=on\|0}} at 6400 rpm	{{convert\|111\|Nm\|lbft\|0\|abbr=on}} at 4800 rpm
	\|{{convert\|1199\|cc\|L\|1\|order=flip\|abbr=on}}				{{ubl \|{{convert\|80.5\|PS\|kW hp\|abbr=on}} at 6200 rpm (Gasoline)\|{{convert\|80.04\|PS\|kW hp\|abbr=on}} at 6400 rpm (LPG)}}	{{ubl \| {{convert\|108\|Nm\|lbft\|0\|abbr=on}} at 4400 rpm (Gasoline)\|{{convert\|104\|Nm\|lbft\|0\|abbr=on}} at 4400 rpm (LPG)}}
\|LL0	{{convert\|1249\|cc\|L\|1\|order=flip\|abbr=on}}	{{convert\|70.5\|mm\|in\|2\|abbr=on}}	{{convert\|80\|mm\|in\|2\|abbr=on}}	10.5:1	{{convert\|62.66\|kW\|PS hp\|abbr=on\|0}} at 6400 rpm	{{convert\|112.05\|Nm\|lbft\|abbr=on}} at 6400 rpm

Applications:

2008-2011 Chevrolet Aveo
2010–present Chevrolet Sail
2010–2022 Chevrolet Beat/Spark
2018–present Wuling Formo{{cite web |url=https://wuling.id/en/formo |title = Formo Minibus Blind Van: Price, Specifications, Interior 2022 {{!}} Wuling}}
2002-2012 Micro Privliege

S-TEC III

Name	Displacement	Bore	Stroke	Compression Ratio	Power	Torque
class=wikitable
\|LCU	\|{{convert\|1399\|cc\|L\|1\|order=flip\|abbr=on}}			\|10.2:1	{{convert\|76\|kW\|PS hp\|0\|abbr=on}} at 6000 rpm	{{convert\|131\|Nm\|lbft\|0\|abbr=on}} at 4200 rpm
\|L2B	\|{{convert\|1485\|cc\|L\|1\|order=flip\|abbr=on}}	{{convert\|74.7\|mm\|in\|abbr=on\|2}}	{{convert\|84.7\|mm\|in\|2\|abbr=on}}	10.2:1	{{convert\|85\|kW\|PS hp\|abbr=on\|0}} at 6000 rpm	{{convert\|144\|Nm\|lbft\|0\|abbr=on}} at 3800 rpm
\|LJO	\|{{convert\|1451\|cc\|L\|1\|order=flip\|abbr=on}} T	{{convert\|73.8\|mm\|in\|abbr=on\|2}}	{{convert\|84.7\|mm\|in\|2\|abbr=on}}	9.8:1	{{convert\|108\|kW\|PS hp\|0\|abbr=on}} at 5500 rpm	{{convert\|250\|Nm\|lbft\|0\|abbr=on}} at 2000-3800 rpm