Technical Specifications
| Brand | Audi |
| Model | TT |
| Generation | TT Roadster (8S, facelift 2018) |
| Type (Engine) | 45 TFSI (245 Hp) |
| Start of production | 2018 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 7.2-7.5 l/100 km (32.7 – 31.4 US mpg, 39.2 – 37.7 UK mpg, 13.9 – 13.3 km/l) |
| CO2 emissions (WLTP) | 163-169 g/km |
| Fuel consumption (urban) | 8.6 l/100 km (27.4 US mpg, 32.8 UK mpg, 11.6 km/l) |
| Fuel consumption (extra urban) | 5.6-5.7 l/100 km (42 – 41.3 US mpg, 50.4 – 49.6 UK mpg, 17.9 – 17.5 km/l) |
| Fuel consumption (combined) | 6.7-6.8 l/100 km (35.1 – 34.6 US mpg, 42.2 – 41.5 UK mpg, 14.9 – 14.7 km/l) |
| CO2 emissions | 153-154 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 5.8 kg/Hp, 173.1 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 261.5 Nm/tonne |
| Power | 245 Hp @ 5000-6700 rpm |
| Power per litre | 123.5 Hp/l |
| 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 | 1415 kg (3119.54 lbs.) |
| Max. weight | 1695 kg (3736.84 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 | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
| 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 |
The 2018-2023 Audi TT Roadster 45 TFSI represents the culmination of over two decades of evolution for Audi’s iconic sports car. The 8S generation, and particularly the facelift, brought a sharper focus on design and technology. Positioned as a mid-range offering, the 45 TFSI bridged the gap between the entry-level models and the performance-oriented TTS. It aimed to deliver a balanced driving experience, combining respectable power with everyday usability. The TT Roadster competed directly with other premium roadsters like the BMW Z4 and Porsche Boxster, offering a distinctive Audi aesthetic and a focus on interior quality.
Powertrain & Engine Architecture
At the heart of the 45 TFSI lies the EA888 2.0-liter turbocharged four-cylinder engine, specifically coded DKTB or DNPA depending on the exact production year and market. This engine is a cornerstone of the Volkswagen Group’s powertrain strategy, known for its robust construction and tuning potential. It utilizes direct fuel injection (FSI) and an integrated exhaust manifold for improved turbocharger response. The turbocharger itself is a twin-scroll unit, further enhancing low-end torque. The engine’s valvetrain employs four valves per cylinder, contributing to its high-revving nature. The 45 TFSI was exclusively offered with a 6-speed manual transmission, delivering a more engaging driving experience than the optional S tronic dual-clutch transmission available on other TT models. The manual gearbox features precise shift engagement and well-chosen ratios to maximize the engine’s output.
Driving Characteristics
The 245 horsepower and 272.9 lb.-ft. of torque delivered by the 45 TFSI powertrain provide brisk acceleration. The 0-60 mph sprint takes approximately 5.8 seconds, making it a genuinely quick roadster. The engine’s peak torque is available from a low 1600 rpm, providing strong pull in everyday driving situations. The manual transmission encourages driver involvement, and the gear ratios are well-matched to the engine’s powerband. Compared to the higher-output TTS, the 45 TFSI feels less frantic and more approachable. While the TTS offers a more visceral experience, the 45 TFSI provides a more relaxed and refined driving character, making it a more comfortable choice for longer journeys. The front-wheel-drive configuration provides good traction, but can exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The 45 TFSI Roadster came standard with a generous array of features, including Audi’s Virtual Cockpit – a fully digital instrument cluster – leather upholstery, automatic climate control, and a premium sound system. Exterior features included LED headlights, 17-inch alloy wheels, and a power-operated soft top. Optional extras included navigation, parking sensors, a wind deflector, and upgraded interior trim materials. The interior design is minimalist and driver-focused, with high-quality materials and a clean layout. The TT Roadster’s cabin is relatively compact, but offers comfortable seating for two adults.
Chassis & Braking
The TT Roadster’s chassis is based on the MQB platform, providing a solid foundation for its sporty handling. The front suspension utilizes a McPherson strut design with coil springs and an anti-roll bar, while the rear suspension employs a multi-link setup. This configuration delivers a good balance between ride comfort and handling precision. The steering is precise and well-weighted, providing good feedback to the driver. Braking duties are handled by ventilated discs at the front and solid discs at the rear, providing ample stopping power. ABS (Anti-lock Braking System) is standard, enhancing safety in emergency braking situations.
Market Reception & Comparison
Critics generally praised the 2018-2023 Audi TT Roadster 45 TFSI for its stylish design, engaging driving experience, and high-quality interior. The 45 TFSI was seen as a sweet spot in the lineup, offering a good balance of performance and value. Fuel economy was considered respectable for a sports car, with combined figures ranging from 31.4 to 32.7 US mpg. Compared to the base TT Roadster models, the 45 TFSI offered a significant performance boost, while remaining more affordable than the TTS. Reliability reports suggest that the EA888 engine is generally robust, but regular maintenance is essential to ensure long-term durability.
Legacy
The Audi TT Roadster 45 TFSI has established itself as a desirable used sports car. Its combination of style, performance, and technology continues to appeal to enthusiasts. The EA888 engine is well-regarded for its reliability and tuning potential, making it a popular choice for aftermarket modifications. As the automotive industry shifts towards electrification, the 45 TFSI represents a final chapter in the era of the traditional gasoline-powered sports car, and is likely to become a sought-after classic in the years to come. The 8S generation TT Roadster, and the 45 TFSI variant in particular, cemented the TT’s position as a modern icon in the automotive world.
