Audi reckon the new 140mph Audi TT 2.0 TDI quattro is the “world’s first bona fide diesel-powered sports car,” with 50mpg-plus fuel economy, a 23 per cent reduction in CO2 output and EU5 compliance. It’s available to order in Coupe and Roadster body styles on Thursday March 6th priced from £26,350 OTR. First deliveries are expected in summer 2008.

Audi TT 2.0 TDI quattro at a glance

  • Acclaimed Audi TT Coupe and Roadster models adopt a diesel engine for the first time in their 10-year history
  • World public debut at the Geneva Palexpo (March 6th to 16th 2008) –
    scheduled to open for UK order in early March 2008 priced from £26,350
    OTR for summer 2008 deliveries
  • Powered by the latest 2.0-litre,
    four-cylinder TDI engine with ultra-efficient common rail fuel
    injection incorporating piezo injectors
  • Already compliant with
    proposed Euro 5 emissions legislation, and over 20 per cent more
    CO2-efficient than petrol equivalent
  • 170PS at 4,200rpm, 350Nm from 1,750rpm to 2,500rpm
  • TT TDI Coupe 0-62mph in 7.5 seconds, top speed 140mph, 53.3mpg combined consumption, CO2 140g/km
  • TT TDI Roadster 0-62mph in 7.7 seconds, top speed 138mph, 51.3mpg combined consumption, CO2 145g/km

The ideal TT TDI engine, which not only had to complement the much-loved character of the TT but also had to fit transversely into its compact engine bay, arrived recently in the space-efficient shape of the latest 2.0-litre, four-cylinder TDI with performance and refinement-boosting common rail fuel injection incorporating advanced piezo injection technology. Launched to critical acclaim in the new A4 Saloon in 143PS form, the economical new powerhouse transfers to the TT with an upgrade to 170PS, and an impressive 350Nm maximum torque output – more than even the 3.2-litre V6 petrol model can muster.

Spurred on by a new turbo charger with adjustable vanes that allow rapid torque build-up, and by the sophisticated common rail injection system, whose advanced piezo injector nozzles can perform up to five distinct injection sequences per cycle, the new engine offers more than enough performance to dispel any lingering doubts about sports car compatibility.

Spinning freely to its 5,000rpm limit, and doing so without fuss thanks not only to its high-tech injection technology but also to refinement-boosting balancer shafts, the TT 2.0 TDI quattro Coupe with six-speed manual transmission takes just 7.5 seconds to reach 62mph. A top speed of 140mph is possible where conditions allow, and the stamina-building influence of TDI is made abundantly clear by a combined consumption figure of 53.3mpg.

The stride forward in efficiency over the outgoing 2.0-litre TDI engine also shows in a CO2 figure of 140g/km for the Coupe – over 20 per cent less than the 2.0 TFSI petrol model – and in a drastic reduction in untreated emissions of oxides of nitrogen. Improvements in combustion chamber thermodynamics mean the new engine can run on up to 60 per cent recycled exhaust that has been cooled by the radiator, and ensure the 2.0 TDI already complies with proposed Euro 5 emission limits.

The impressive all-round performance of the new TT 2.0 TDI quattro is also due in no small part to its lightweight Audi Space Frame aluminium and steel hybrid body shell, which contributes to impressively low kerb weights of 1,370kg for the TT 2.0 TDI quattro Coupe and 1,415kg for the TT 2.0 TDI quattro Roadster.

The undivided attention to weight-saving also proves its worth in the comfort of the TT’s ride and the nimbleness of its handling, which in the best traditions of all higher-torque sporting Audis is backed up by quattro permanent four-wheel-drive. The space-age Audi magnetic ride adaptive damping system, employing specially developed dampers filled with a magnetic fluid that reacts to an electrical charge, will also be available as an option for driving enthusiasts who want to extract the very best from the sophisticated aluminium-rich suspension.

Standard UK specification for the new TT 2.0 TDI quattro mirrors the familiar 2.0 TFSI petrol version, offering features such as 17-inch Trapez alloy wheels, leather and Alcantara-upholstered sports seats, electronic climate control and an MP3-compatible 140-watt Audi Concert audio system with single CD drive. The Roadster adds a fully automatic electrically operated soft-top and integrated wind deflector.