The Audi TT Roadster (8S), particularly the facelifted version produced from 2018 to 2023, represents a compelling blend of sporty aesthetics and modern technology within the premium compact roadster segment. The 45 TFSI variant, equipped with a 2.0-liter turbocharged four-cylinder engine producing 245 horsepower and paired with Audi’s seven-speed S tronic dual-clutch transmission, occupied a sweet spot in the TT Roadster lineup, offering a significant performance upgrade over the base models while remaining more accessible than the higher-performance TTS. This iteration built upon the success of the 8S generation, introduced in 2014, refining its design and enhancing its technological features.
Technical Specifications
| Brand | Audi |
| Model | TT |
| Generation | TT Roadster (8S, facelift 2018) |
| Type (Engine) | 45 TFSI (245 Hp) S tronic |
| Start of production | 2018 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 7.3-7.6 l/100 km (32.2 – 30.9 US mpg, 38.7 – 37.2 UK mpg, 13.7 – 13.2 km/l) |
| CO2 emissions (WLTP) | 166-173 g/km |
| Fuel consumption (urban) | 8.6-8.7 l/100 km (27.4 – 27 US mpg, 32.8 – 32.5 UK mpg, 11.6 – 11.5 km/l) |
| Fuel consumption (extra urban) | 5.4-5.5 l/100 km (43.6 – 42.8 US mpg, 52.3 – 51.4 UK mpg, 18.5 – 18.2 km/l) |
| Fuel consumption (combined) | 6.6-6.7 l/100 km (35.6 – 35.1 US mpg, 42.8 – 42.2 UK mpg, 15.2 – 14.9 km/l) |
| CO2 emissions | 151-152 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6 sec |
| Acceleration 0 – 62 mph | 6 sec |
| Acceleration 0 – 60 mph | 5.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 5.9 kg/Hp, 169 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 255.2 Nm/tonne |
| Power | 245 Hp @ 5000-6700 rpm |
| Torque | 370 Nm @ 1600-4300 rpm (272.9 lb.-ft. @ 1600-4300 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | DKTB, DNPA |
| Engine displacement | 1984 cm3 (121.07 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Kerb Weight | 1450 kg (3196.7 lbs.) |
| Max. weight | 1730 kg (3814 lbs.) |
| Max load | 280 kg (617.29 lbs.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4191 mm (165 in.) |
| Width | 1832 mm (72.13 in.) |
| Width including mirrors | 1966 mm (77.4 in.) |
| Height | 1355 mm (53.35 in.) |
| Wheelbase | 2505 mm (98.62 in.) |
| Front track | 1572 mm (61.89 in.) |
| Rear track | 1552 mm (61.1 in.) |
| Front overhang | 893 mm (35.16 in.) |
| Rear overhang | 793 mm (31.22 in.) |
| Drag coefficient (Cd) | 0.32 |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission S tronic |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
At the heart of the 45 TFSI Roadster lies the EA888 2.0-liter turbocharged four-cylinder engine. Specifically, engine codes DKTB and DNPA were commonly found in this application. This engine utilizes direct fuel injection (FSI) and an integrated exhaust manifold for improved thermal management and responsiveness. The turbocharger, an evolution of the K03 design, provides significant boost across a broad RPM range. The engine’s valvetrain employs dual overhead camshafts and four valves per cylinder, optimizing airflow for increased power output. The seven-speed S tronic dual-clutch transmission is a key component of the driving experience. It offers incredibly fast and smooth gear changes, contributing to both performance and efficiency. Unlike a traditional automatic, the S tronic doesn’t have a torque converter, resulting in a more direct connection between the engine and the wheels.
Driving Characteristics
The 245 horsepower and 273 lb-ft of torque delivered by the 45 TFSI powertrain translate into brisk acceleration. The 0-60 mph sprint takes approximately 5.7 seconds, and the car feels responsive in everyday driving situations. The S tronic transmission’s quick shifts and well-chosen gear ratios keep the engine in its optimal power band. Compared to the base 1.8-liter TFSI models, the 45 TFSI offers a substantial performance upgrade, providing more confident overtaking and a more engaging driving experience. While not as raw or focused as the TTS variant, the 45 TFSI strikes a good balance between performance and usability. The front-wheel-drive configuration, while generally safe and predictable, can exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The 45 TFSI Roadster typically came well-equipped as standard. Features included Audi’s Virtual Cockpit – a fully digital instrument cluster – leather upholstery, automatic climate control, and a premium sound system. Exterior features often included LED headlights and taillights, and 17-inch alloy wheels. Optional extras were plentiful, including a wind deflector, upgraded leather packages, navigation system, and various driver-assistance systems like adaptive cruise control and parking assist. The interior design was minimalist and driver-focused, with high-quality materials and a clean layout.
Chassis & Braking
The 8S TT Roadster utilizes a McPherson strut front suspension and a multi-link rear suspension, providing a good balance of comfort and handling. The suspension tuning was slightly firmer in the 45 TFSI compared to the base models, reflecting its performance aspirations. Braking duties are handled by ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) is standard. The steering is electrically assisted, providing precise and responsive control. The car’s relatively low weight (around 3200 lbs) contributes to its agile handling characteristics.
Market Reception & Comparison
The Audi TT Roadster 45 TFSI was generally well-received by automotive critics. It was praised for its stylish design, engaging driving dynamics, and high-quality interior. Fuel economy was considered respectable for a performance roadster, averaging around 30-35 mpg in mixed driving. Compared to rivals like the BMW Z4 and Porsche Boxster, the TT Roadster offered a more affordable entry point while still delivering a premium experience. The 45 TFSI trim offered a compelling alternative to the base models, providing a noticeable performance boost without the higher price tag of the TTS.
Legacy
The EA888 2.0-liter turbocharged engine has proven to be a remarkably durable and reliable powerplant, and the 45 TFSI variant of the 8S TT Roadster is no exception. With proper maintenance, these engines can easily exceed 150,000 miles. The S tronic transmission, while requiring more frequent servicing than a traditional automatic, is also generally reliable. On the used car market, the 8S TT Roadster 45 TFSI holds its value well, appealing to buyers seeking a stylish and sporty roadster with a proven track record. Its combination of performance, technology, and build quality ensures its continued desirability for years to come.
