Class 1 Touring Cars#Second generation (2019–present)

File:Audi 80 B4 1.jpg

The first generation was a production-based formula introduced in 1993 along with Class 2 Touring Cars, the latter officially becoming known as Super Touring cars from 1995. Class 1 permitted more liberal modifications to the vehicles than those allowed for Class 2 cars.[http://www.ultimatecarpage.com/car/756/Alfa-Romeo-155-V6-TI-DTM.html Alfa Romeo 155 DTM] Retrieved from www.ultimatecarpage.com on 19 November 2009

These Class 1 regulations restricted engines to a maximum of six cylinders, 2.5 litres capacity and four valves per cylinder.European Touring Car Championships, Automobile Year, 1995/96, page 206 The basic unit had to be derived from a production engine made in quantity by the same manufacturer as the car, although it did not have to be from the same model as that being raced and could be extensively modified. All-wheel drive, traction control, anti-lock brakes and electronically controlled differentials were permitted. Aerodynamic aids were free below the wheel centreline and, from 1995, suspension systems could be purpose-built rather than production-based.European Touring Car Championships, Automobile Year, 1995/96, page 207

Class 1 Touring Cars contested the Deutsche Tourenwagen Meisterschaft (DTM) series from 1993 to 1995,[http://www.dtm.com/historie.php?lang=en& DTM History 1984–2008] {{Webarchive|url=https://web.archive.org/web/20100504033120/http://www.dtm.com/historie.php?lang=en& |date=2010-05-04 }} Retrieved from www.dtm.com on 19 November 2009 the International Touring Car Series (ITC) in 1995[http://www.motorsport-archive.com/index.php?mode=Season&id=271 1995 ITCS schedule and standings] Retrieved from www.motorsport-archive.com on 19 November 2009 and for the International Touring Car Championship (ITC) in 1996.[http://www.motorsport-archive.com/index.php?mode=Season&id=272 1996 ITCC schedule and standings] Retrieved from www.motorsport-archive.com on 19 November 2009

Only three manufacturers, Alfa Romeo, Mercedes-Benz and Opel, competed in Class 1 during the short history of the original category, with genuine works efforts (Audi and BMW had built cars based on the B4 80 Quattro and E36 M3 respectively for the class, but never raced them){{cite web |last1=Hundscheid |first1=Marcel |title=The Glory Years of DTM Part 3: 1990 – 1993 |url=https://www.motorsportretro.com/2018/01/dtm-the-glory-years-1990-part-3/ |website=Motorsport Retro |access-date=2021-03-22 |date=2018-01-05}} and the withdrawal of Alfa Romeo and Opel from the ITC at the end of 1996 effectively spelt the end of the class.

In early 2014, the DTM and the Japanese Super GT Series began a co-operation agreement in which the two series would begin to merge their technical regulations.{{cite news|url=https://www.carthrottle.com/post/w6qq2bx/|title=Will the Class One series ever exist?|publisher=Car Throttle|date=24 March 2016}} This led to an official tie-up in September of the same year, with plans for the DTM to move to 2.0-litre inline-4 engines by 2017.{{cite news|url=https://www.autosport.com/dtm/news/116091/dtm-switches-to-turbos-for-2017|title=DTM moves to turbo engines for 2017 as part of Super GT alignment|publisher=Autosport|date=30 September 2014}} Aerodynamic alterations were agreed in 2015, with the seeds sown for potential joint-races between the series.{{cite news|url=https://www.auto-motor-und-sport.de/dtm/neue-motoren-fuer-dtm-class-one-kommt-ab-2017/|title=Class One kommt ab 2017 (in German)|publisher=Auto Motor und Sport|date=20 May 2015}}

Later in the same year however, the regulation changes were postponed to 2019 given DTM manufacturers' reluctance to potentially engage in more costly development.{{cite news|url=https://www.auto-motor-und-sport.de/dtm/streit-um-neuen-turbomotor-in-der-dtm/|title=Streit um neuen DTM-Turbomotor (in German)|publisher=Auto Motor und Sport|date=29 September 2015}} Super GT would also delay the implementation of the regulations to 2020, as the final regulations were signed off in 2018.{{cite news|url=https://www.autosport.com/dtm/news/136939/dtm-and-super-gt-finalise-class-one-tieup|title=DTM and Super GT finalise 'Class 1' rules tie-up and joint races|publisher=Autosport|date=23 June 2018}}

The second generation of Class 1 Touring Car is a purpose-built racer based on a two-door road-going model. The cars feature a two-litre turbocharged inline-four engine, capped at 650 hp and mounted in the front of the car. Push-to-pass and DRS are employed on the DTM vehicles (but not in Super GT), which benefit from 3.4t of downforce. All vehicles must be front-engine, rear-wheel drive.{{cite news|url=https://www.speedcafe.com/2018/06/24/dtm-super-gt-seal-move-to-class-1-regulations/|title=DTM, Super GT seal move to Class 1 regulations|publisher=Speedcafe|date=24 June 2018}}{{cite web |title=Class One: New Regulations To Combine DTM and Super GT |url=https://www.windingroad.com/articles/reviews/class-one-new-regulations-to-combine-dtm-and-super-gt/ |website=Winding Road |date=2019-09-17}}

The first Class 1 cars debuted at the 2019 DTM Hockenheim round. DTM and Super GT conducted joint-races at the end of 2019, however both saw the previous generation Super GT GT500 cars enter.{{cite news|url=https://www.touringcartimes.com/2019/11/27/dream-race-success-no-plans-joint-races-yet/|title='Dream race' a success but no plans for any more joint races yet|publisher=Touring Car Times|date=27 November 2019}} Aston Martin, entering DTM for the first time through the new regulations, concluded their program after a single season with constructors R-Motorsport claiming the cars were too expensive.{{cite news|url=https://www.autosport.com/dtm/news/148006/rmotorsport-aston-squad-withdraws-from-dtm|title=R-Motorsport Aston Martin squad withdraws from DTM after one season|publisher=Autosport|date=24 January 2020}} Audi followed suit by announcing their departure from the series for the 2021 season in April 2020.{{cite web|title=Audi announces decision to quit DTM after 2020|url=https://www.motorsport.com/dtm/news/audi-quits-after-2020-volkswagen/4785521/|last=Klein|first=Jamie|work=motorsport.com|publisher=motorsport.com|date=27 April 2020|access-date=27 April 2020}} The DTM eventually abandoned the regulation set after just two seasons and switched to a GT3–based formula from 2021, leaving Super GT as the only remaining series with these regulations for GT500 competitors although the GT300 category still uses Group GT3 rules to this day.{{cite news|url=https://www.motorsport.com/dtm/news/future-2021-rules-explained/4904469/|title=DTM to use spec GT3 cars for new era in 2021|publisher=Motorsport.com|date=6 November 2020}}

• Engine displacement: {{Convert|2.0|L|cuin|0|lk=on|abbr=on}} DOHC inline-4
• Engine management: Bosch Motronic MS 7.4 (Deutsche Tourenwagen Masters since 2019 and Super GT GT500 since 2020)
• Gearbox: 6-speed paddle shift gearbox (must have reverse)
• Weight:
• {{Convert|1070|kg|lb|0|lk=on|abbr=on}} including driver and fuel (Deutsche Tourenwagen Masters)
• {{Convert|1020|kg|lb|0|lk=on|abbr=on}} including driver and fuel (Super GT GT500)
• Power output:
• Deutsche Tourenwagen Masters:
• 2019: {{Convert|610|+|30|hp|kW|0|lk=on|abbr=on}} with push-to-pass
• 2020: {{Convert|580|+|60|hp|kW|0|lk=on|abbr=on}} with push-to-pass
• {{Convert|550-650|PS|kW|0|lk=on|abbr=on}} (Super GT GT500)

• Fuel:
• Aral Ultimate 102 unleaded (Deutsche Tourenwagen Masters)
• Various (Super GT GT500)
• Fuel capacity: {{Convert|31.7|usgal|L impgal|0|lk=on|abbr=off}}
• Fuel delivery: Gasoline direct injection
• Fuel-mass flow restrictor rate: (Deutsche Tourenwagen Masters only)
• 2019: {{Convert|95|+|5|kg/h|lb/h|0|lk=on|abbr=on}} with push-to-pass
• 2020: {{Convert|90|+|10|kg/h|lb/h|0|lk=on|abbr=on}} with push-to-pass
• Fuel injection rail and injector pressure: Maximum {{Convert|350|bar|psi|0|lk=on|abbr=on}}
• Aspiration: Single-turbocharged
• Turbocharger: Garrett TR35R 846519-15
• Turbo boost pressure: {{Convert|3.5|bar|psi|0|lk=on|abbr=on}}
• Length: Not exceeding {{Convert|5000|mm|in|0|lk=on|abbr=on}} including rear wing
• Width: {{Convert|1950|mm|in|0|lk=on|abbr=on}}
• Wheelbase: {{Convert|2750|mm|in|0|lk=on|abbr=on}} restricted. Adjustable wheelbase banned
• Steering: Power-assisted rack and pinion
• Prohibited Items: Traction control, active suspension and anti-lock braking systems

• Super Touring – FIA Class 2 Touring Cars
• Deutsche Tourenwagen Meisterschaft – The German Touring Car Championship
• Deutsche Tourenwagen Masters
• Super GT

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Category:Racing car classes

Category:Touring car racing

Category:Fédération Internationale de l'Automobile