The Audi TT is a 2-door sports car marketed by Volkswagen Group subsidiary Audi since 1998, and now in its third generation. The first two generations were assembled by the Audi subsidiary Audi Hungaria Motor Kft. in Győr, Hungary, using bodyshells manufactured and painted at Audi's Ingolstadt plant and parts made entirely by the Hungarian factory for the third generation.
For each of its three generations, the TT has been available as a 2+2 coupé and as a two-seater roadster employing consecutive generations of the Volkswagen Group A platform, starting with the A4 (PQ34). As a result of this platform-sharing, the Audi TT has identical powertrain and suspension layouts as its related platform-mates; including a front-mounted transversely oriented engine, front-wheel drive or quattro four-wheel drive system, and fully independent front suspension using MacPherson struts.
The styling of the Audi TT began in the spring of 1994 at the Volkswagen Group Design Center in California. The TT was first shown as a concept car at the 1995 Frankfurt Motor Show. The design is credited to J Mays and Freeman Thomas, with Hartmut Warkuss, Peter Schreyer,Martin Smith and Romulus Rost contributing to the interior design.
A previously unused laser beam welding adaptation, which enabled seamless design features on the first-generation TT, delayed its introduction. Audi did not initially offer any type of automatic transmission option for the TT. However, from 2003, a dual clutch six-speed Direct-Shift Gearbox (DSG) became available, with the United Kingdom TT variants becoming the world's first user of a dual clutch transmission configured for a right-hand drive vehicle, although the outright world first for a road car equipped with a dual clutch transmission was claimed earlier by a Volkswagen Group platform-mate, the left hand drive Volkswagen Golf Mk4 R32.
The Audi TT takes its name from the successful motor racing tradition of NSU in the British Isle of Man TT (Tourist Trophy) motorcycle race. NSU marque began competing at the Isle of Man TT in 1907 with the UK manager Martin Geiger finishing in fifth position in the single-cylinder race. The 1938 Isle of Man Lightweight TT race was won by Ewald Kluge with a 250 cc supercharged DKW motor-cycle and the DKW and NSU companies later merged into the company now known as Audi.
The Audi TT also follows the NSU 1000TT, 1200TT and TTS cars of the 1960s in taking their names from the race.
The TT name has also been attributed to the phrase "Technology and Tradition".
The production model (internal designation Type 8N) was launched as a coupé in September 1998, followed by a roadster in August 1999. It is based on the Volkswagen Group A4 (PQ34) platform as used for the Volkswagen Golf Mk4, the original Audi A3, the Škoda Octavia, and others. The styling differed little from the concept, except for slightly reprofiled bumpers, and the addition of rear quarterlight windows behind the doors. Factory production commenced in October 1998.
Early TT models received press coverage following a series of high-speed accidents and the related fatalities which occurred at speeds in excess of 112 mph (180 km/h) during abrupt lane changes or sharp turns. Both the coupé and roadster variants were recalled in late 1999/early 2000, to improve predictability of the car's handling at very high speeds. Audi's Electronic Stability Programme (ESP) or Anti Slip Regulation (ASR) and rear spoiler were added, along withmodifications to the suspension system. All changes were incorporated into subsequent production.
The Audi TT was nominated for the North American Car of the Year award for 2000. It was also on Car and Driver magazine's Ten Best list for 2000 and 2001. By 2003, Audi had provided a "face-lift" to the TT, with a number of small styling and practicality improvements.
Production of the Audi TT (Type 8N) ended in June 2006.
Mechanically, the TT shares an identical powertrain layout with its related Volkswagen Group-mates. The TT uses a transversely mounted internal combustion engine, with either front-wheel drive with 'quattro four-wheel drive' available as an option. It was first available with a 1.8-litre inline four-cylinder 5-valve turbocharged engine in two states of DIN-rated power outputs; 180 PS (132 kW; 178 hp) and 225 PS (165 kW; 222 hp). The engines share the same fundamental design, but the 225 PS version features a larger K04 turbocharger (180 PS version came with a smaller K03S), an additional intercooler on the left side (complementing the existing right-side intercooler), larger 20mm wrist-pins, a dual tailpipe exhaust, intake manifold with inlet on driver's side, and a few other internals – designed to accommodate the increase in turbo boost, from roughly 10 pounds per square inch (0.7 bar) peak, to 15 pounds per square inch (1.0 bar). Haldex Traction enabled four-wheel drive, 'branded' as "Quattro" was optional on the 180 engine, and standard on the more powerful 225 version.
The original four-cylinder engine range was complemented with a 3,189 cc (3.2 L; 194.6 cu in) VR6 engine rated at 250 PS (247 bhp; 184 kW) and 320 N⋅m (236 lb⋅ft) of torque in early 2003, which came as standard with the quattro four-wheel-drive system. In July 2003, a new six-speed dual clutch transmission – dubbed the Direct-Shift Gearbox (DSG), which improves acceleration through much-reduced shift times, was offered, along with a stiffer suspension.
In 2005, Audi released the Coupé-only limited edition (800 sold in the UK, not the 1000 originally planned) Audi TT quattro Sport (known as the Audi TT Club Sport in Europe). Built by AUDI AG's high-performance specialist subsidiary quattro GmbH, it had increased power from its 1.8-litre turbocharged engine – rising to 240 PS (177 kW; 237 hp) and 320 N⋅m (236 lbf⋅ft) of torque – and a reduction in weight of 75 kg (165 lb) to 1,390 kg (3,064 lb), which allowed for a 0–62 mph (0–100 km/h) time of 5.9 seconds, and an electronically limited top speed of 155 mph (249 km/h).
This weight reduction was achieved by removing the spare wheel, rear harmonic damper, rear parcel shelf and rear seats, and the standard fitment air conditioning. The main battery was also relocated to the rear of the vehicle in order to maintain weight distribution as much as possible. Lightweight fixed-back Recaro bucket seats graced the interior. Distinguishable from other TT Coupés by its two-tone paint scheme (Phantom Black pearl painted roof, pillars and mirror housings, in combination with either Avus Silver, Phantom Black, Mauritius Blue or Misano Red body colour) and unique 18" 15-spoke cast aluminium alloy wheels, plus the same body kit as fitted to the TT 3.2 V6, the TT quattro Sport also featured black exhaust tailpipes and uprated suspension settings and new wheels, ½" wider at the rear for improved handling. The brochure stated V6-spec brakes were to be fitted, however models delivered in the UK came with the standard 225 spec brake callipers which were red-painted.
The 8N powertrain options consist of the following engines and drivelines:
There were two United States class action lawsuits affecting specific model years of the first generation TT.
On 22 June 2007, Pearson, Simon, Soter, Warshaw and Penny, LLP and the Law Office of Robert L. Starr filed a class action lawsuit against Volkswagen Group of America, alleging that the timing belts for model year 1999–2003 Audi and Volkswagen vehicles equipped with a 1.8-litre turbocharged engine fail prematurely. The vehicles included are the Audi TT, Audi A4 and Volkswagen Passat. The complaint alleged that the timing belts failed prior to the service interval, as stated in the owner's manual. The parties have reached a class-wide settlement, and preliminary approval of the settlement was granted by the court on 19 May 2008.
On 22 May 2008, the U.S. District Court, Northern District of California, entered an order preliminarily approving a nationwide settlement of a class action lawsuit brought by Green Welling LLP, on behalf of all current and prior owners and lessees of 2000–2004, and 2005 model year Audi TTs. The lawsuit and settlement related to allegedly defective instrument clusters, and Audi TT owners are entitled to submit claims for repairs, replacement and/or cash reimbursement for out-of-pocket expenses, and all TT owners covered by the suit will receive a two-year extension of their existing four-year warranty (limited to the instrument cluster).
For the 30th anniversary Quattro gmbH unveiled an Imola Yellow TT that sported a 2.7 L Bi-Turbo V6 engine from a B5 Audi RS4 that produced 280 kW (381 PS; 375 hp) and 440 N⋅m (325 lb⋅ft) at 2,500 rpm which was manufactured in 2001. This was accomplished by using a B5 RS4 donor car, which included engine, transmission, rear differential, axles, brakes, and wheels from a B5 Avant. Using the RS4 drivetrain, Audi had the ability to utilize a Torsen based 6-speed Quattro manual transmission in a car that is normally using a transverse engine layout and Haldex based all wheel drive system.
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