The Audi A4 DTM is a 4-door Touring Car (DTM) racing car constructed by the German car manufacturer Audi AG. It was developed for use in the 2004 DTM season. The Audi A4 DTM replaced theAudi TT DTM at the end of 2003 season and is based on the standard Audi A4 car. The A4 DTM underwent six facelifts of development from 2004 to 2011. The Audi A4 DTM was succeeded by the Audi A5 DTM in 2012.

Audi A4 DTM R11 (2004) Audi A4 DTM R12 (2005-2006) Audi A4 DTM R13 (2007) Audi A4 DTM R14 (2008) Audi A4 DTM R14+ (2009-2011)
Category	Deutsche Tourenwagen Masters (Touring Cars)
Constructor	Audi
Predecessor	Abt-Audi TT-R DTM
Successor	Audi A5 DTM
Technical specifications
Chassis	Space frame, carbon-fibre composite driver's safety cell, carbon fibre composite front and rear crash structures must be FIA/DMSB approval safety cage
Suspension (front)	Eibach Springs independent front and rear suspension, double-wishbone suspension, push-rod system with spring/damper unit, adjustable gas-filled dampers
Suspension (rear)	Eibach Springs independent front and rear suspension, double-wishbone suspension, push-rod system with spring/damper unit, adjustable gas-filled dampers
Length	4,800 mm (189 in)
Width	1,850 mm (73 in)
Height	1,200 mm (47 in) measured from identical reference plane
Axle track	Front: 1,596 mm (63 in) Rear: 1,571 mm (62 in)
Wheelbase	2,795 mm (110 in)
Engine	Custom-built Audi 4,000 cc (4.0 L; 244.1 cu in) V8 90 degree cylinder angle, 32-valve, 2xDOHC, four valves per cylinder, air restricted to 2 x 28 mm by regulations, naturally aspirated (no Turbocharger), front engined, longitudinally mounted
Transmission	Hewland 6-speed sequential manual sport gearbox paddle shift with reverse, adjustable multi-plate limited-slip differential
Power	460 hp (343 kW; 466 PS)
Weight	1,050 kg (2,315 lb) (including driver)
Fuel	Aral Ultimate 102 RON
Lubricants	Shell Helix Castrol dry sump
Tyres	Dunlop SP Sport Maxx (2004-2010) Hankook Ventus (2011) Front: 265/660 - R18 Rear: 280/660 - R18 O.Z. Racing forged aluminium wheels Front: 10 x 18 inches Rear: 11 x 18 inches
Competition history
Notable entrants	Audi Sport Team Abt  Audi Sport Team Joest  Audi Sport Team Phoenix  Audi Sport Team Rosberg  Futurecom TME
Notable drivers	Mattias Ekström  Martin Tomczyk  Christian Abt  Tom Kristensen  Rinaldo Capello  Emanuele Pirro  Frank Biela  Allan McNish  Pierre Kaffer  Frank Stippler  Heinz-Harald Frentzen  Timo Scheider  Olivier Tielemans  Jeroen Bleekemolen  Nicolas Kiesa  Thed Björk  Vanina Ickx  Marco Werner  Markus Winkelhock  Lucas Luhr  Alexandre Prémat  Adam Carroll  Oliver Jarvis  Katherine Legge  Christijan Albers  Christian Bakkerud  Johannes Seidlitz  Tomáš Kostka  Miguel Molina  Darryl O'Young  Rahel Frey  Filipe Albuquerque  Edoardo Mortara
Debut	2004 Hockenheimring DTM round
Races		Wins	Poles	Fastest laps
87 (including non-championship race at Shanghai and Olympiastadion Munich)		35 (including non-championship race at Olympiastadion Munich)	44	32
Constructors' Championships	5 (2004, 2007, 2008, 2009, 2011)
Drivers' Championships	5 (2004 by Mattias Ekström, 2007 by Mattias Ekström, 2008 by Timo Scheider, 2009 by Timo Scheider, 2011 by Martin Tomczyk)

Comeback as a factory team

After the private Team Abt Audi TT-R was used from 2000 to 2003 with Laurent Aiello, Audi reentered the DTM series with a factory team. Audi's comeback resulted in a successful start and the winning all of the titles for the driver, team, and manufacturer rating of the championship race.

Technical details

Like all DTM racing cars, the A4 DTM resembles its A4 production equivalent only in cosmetic appearance. The A4 DTM is constructed with a CFK -monocoque chassis and an integrated 15.4-imperial-gallon fuel tank. The A4 DTM is powered by a 4,000 cc (4.0 L; 244.1 cu in) Audi naturally-aspirated V8 engine, with a power output of approximately 460 hp (343 kW; 466 PS) and a maximum torque pof more than 500 Nm (370 lbft). The rear-wheel drive A4 DTM also has a sequential 6-speed sports transmission, a 3-plate carbon fiber clutch supplied by Sandtler GmbH|Sandtler (2004-2010) and ZF (2011), and an adjustable multi-disc limited-slip differential.

Production A4 DTM Edition

To celebrate its first DTM championship title, Audi released a production DTM variant of the A4 model from 2005 to 2007. It featured 20 extra horsepower over the standard model, additional sport exterior features, and a new Quattro all-wheel-drive system.

Audi A4 DTM R14+ 2009 Specifications

• Chassis: Space frame, carbon-fibre composite driver's safety cell, carbon fibre composite front and rear crash structures must be FIA/DMSBapproval safety cage
• Engine: Custom-built Audi V8 engine
• Engine Type: 90 degrees, 32-valve, 2xDOHC, 9000 rpm rev-limit, 4-valves per cylinder
• Engine Displacement: 4,000 cc (4.0 L; 244.1 cu in)
• Pistons: Mahle
• Filter: Dow
• Exhaust systems: Remus three-way catalytic converter
• Power output: Approx. 460 hp (343 kW; 466 PS) at 7500/min
• Torque: Approx. 500 Nm (370 lbft)
• ECU: Bosch Motronic MS 2.9
• Spark plugs: Bosch
• Fuel: Aral Ultimate 102 RON super-unleaded
• Fuel delivery: Fuel injection
• Lubrication: Castrol, Shell Helix dry sump
• Aspiration: Naturally-aspirated
• Gearbox: Hewland sequential manual 6-speed sports gear (controlled DTM standard)
• Drivetrain: Rear-wheel drive
• Clutch: Sandtler (2003–10), ZF (2011) 3-plate carbon-fibre clutch
• Differential: Adjustable multi-plate LSD
• Radiator fluid: Würth
• Brake fluid: Würth
• Steering: Servo assisted rack and pinion steering
• Drive shafts: Constant-velocity plunging tripod joint shafts
• Springs/Suspension: Eibach Springs independent front and rear suspension, double-wishbone suspension, push-rod system with spring/damper unit, adjustable gas-filled dampers
• Brakes: AP Racing hydraulic dual circuit brake system, light alloy brake calipers, front and rear ventilated carbon brake discs (DTM standard), driver adjustable infinitely variable brake-balance
• Wheels: O.Z. Racing forged aluminium wheels
  • Front: 10 x 18"
  • Rear: 11 x 18"
• Tyres: Dunlop SP Sport Maxx (2000-2010), Hankook Ventus (2011) radial slick and treaded rain tyres.
• Front: 265/660 - R18
• Rear: 280/660 - R18
• Length: 4800 mm (189 in) 4,800 mm (189 in)
• Height: 1,200 mm (47 in)
• Width: 1,850 mm (73 in)
• Wheelbase: 2,795 mm (110 in)
• Front axle track width: 1,596 mm (63 in)
• Rear axle track width: 1,571 mm (62 in)
• Minimum weight: 1,050 kg (2,315 lb) including the driver with overall and helmet
• Fuel Capacity: 15.4 imp gal (70 L; 18 US gal)
• Display instrumentation: Bosch DDU 4 Monochrome LCD Motorsport Display
• Steering wheel: Audi Sport steering wheel with 4 buttons
• Safety equipment: Sabelt 6-point seat belt, HANS device, helmet, headsock, race suit, NOMEX firesuit, racing gloves, racing socks, racing boots
• Ignition: Bosch CDI
• Battery: Bosch 12 volts
• Car wiring harness: Bosch
• Data Logging Systems: Bosch
• Traction control: No
• Team: Audi Sport Team Abt Sportsline, Team Phoenix, Team Rosberg, Futurecom TME

Mattias Ekström in 2010	Front view of 2004 Audi A4 DTM		Timo Scheider in 2009
Timo Scheider in 2011		Mattias Ekström in 2009

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Last updated on 19 April 2014 at 12:30.

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