The Audi TT Roadster (8S) 1.8 TFSI, produced from 2015 to 2018, represents a compelling entry point into the third generation of Audi’s iconic sports car. Positioned within the 8S range, which spanned from 2015 to 2020, this variant offered a blend of performance, style, and relative affordability. It served as the base engine option for the Roadster, appealing to buyers seeking the TT experience without the higher price tags associated with the more powerful TTS or TT RS models. The 8S generation marked a significant evolution for the TT, incorporating a more angular design language, a fully digital instrument cluster (Audi Virtual Cockpit), and advancements in engine technology. This specific 1.8 TFSI model was primarily sold in European and Asian markets, with limited availability in the United States where the TT was typically offered with higher-output engines.
Technical Specifications
| Brand | Audi |
| Model | TT |
| Generation | TT Roadster (8S) |
| Type (Engine) | 1.8 TFSI (180 Hp) |
| Start of production | August, 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Doors | 2 |
| Fuel consumption (urban) | 7.5-7.7 l/100 km (31.4 – 30.5 US mpg) |
| Fuel consumption (extra urban) | 5-5.2 l/100 km (47 – 45.2 US mpg) |
| Fuel consumption (combined) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg) |
| CO2 emissions | 138 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.2 sec |
| Acceleration 0 – 62 mph | 7.2 sec |
| Acceleration 0 – 60 mph | 6.8 sec |
| Maximum speed | 237 km/h (147.26 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.2 kg/Hp |
| Weight-to-torque ratio | 5.2 kg/Nm |
| Power | 180 Hp @ 5100-6200 rpm |
| Torque | 250 Nm @ 1250-5000 rpm (184.39 lb.-ft. @ 1250-5000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | EA888 / CJSA |
| Engine displacement | 1798 cm3 (109.72 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82.5 mm (3.25 in.) |
| Piston Stroke | 84.1 mm (3.31 in.) |
| Compression ratio | 9.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection and Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1300 kg (2866.01 lbs.) |
| Max. weight | 1620 kg (3571.49 lbs.) |
| Max load | 320 kg (705.48 lbs.) |
| Trunk (boot) space – minimum | 280 l (9.89 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4177 mm (164.45 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 (Back) track | 1552 mm (61.1 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 6 |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 225/50 R17 |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
The heart of the TT Roadster 1.8 TFSI is the EA888 engine, specifically the CJSA variant. This 1.8-liter, turbocharged inline-four engine utilizes direct fuel injection combined with multi-point injection, optimizing both power delivery and fuel efficiency. The engine produces 180 horsepower at 5,100-6,200 rpm and 250 Nm (184 lb-ft) of torque between 1,250 and 5,000 rpm. The turbocharger, coupled with an intercooler, provides a noticeable boost in power across the rev range. The engine features a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its responsive nature. The engine is transversely mounted, driving the front wheels. The transmission is a six-speed automatic, offering smooth shifts but sacrificing some of the engagement found in the available manual transmission. This automatic gearbox was chosen to appeal to a broader audience prioritizing comfort and ease of use.
Driving Characteristics
The 1.8 TFSI automatic combination delivers a comfortable and accessible driving experience. While not as overtly sporty as the higher-powered TT variants, it provides sufficient acceleration for everyday driving and enjoyable weekend excursions. The 0-60 mph time of around 6.8 seconds is respectable, and the engine’s torque band makes it feel responsive in most situations. The automatic transmission, while smooth, can sometimes feel hesitant during quick downshifts. Compared to the six-speed manual, the automatic offers less driver involvement. The gear ratios are tuned for fuel efficiency and comfortable cruising, rather than outright performance. The front-wheel-drive configuration provides predictable handling, but can exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The 1.8 TFSI Roadster typically came equipped with a generous array of standard features. These included leather upholstery, automatic climate control, a multi-function steering wheel, and Audi’s MMI infotainment system with a 6.5-inch display screen. Standard safety features included ABS, electronic stability control, and multiple airbags. Optional extras included the Audi Virtual Cockpit (a fully digital instrument cluster), a larger infotainment screen, navigation, premium sound systems (Bang & Olufsen), and various cosmetic enhancements. Interior trim options were relatively limited compared to higher-spec TT models, focusing on a clean and modern aesthetic.
Chassis & Braking
The TT Roadster 1.8 TFSI utilizes a McPherson strut front suspension and a multi-link rear suspension, providing a good balance between comfort and handling. Stabilizer bars are fitted to both axles to reduce body roll during cornering. The braking system consists of ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) is standard. The suspension setup is tuned to be slightly softer than that of the TTS, prioritizing ride comfort over ultimate track performance. The steering is electrically assisted, providing a light and precise feel.
Market Reception & Comparison
The 1.8 TFSI Roadster was generally well-received by automotive critics as an accessible and stylish entry point into the TT range. It was praised for its attractive design, comfortable interior, and decent performance. However, some reviewers noted that the automatic transmission could feel sluggish at times, and that the engine lacked the outright punch of the more powerful 2.0 TFSI variant. Fuel economy was considered good for a sports car, averaging around 39.9 mpg on the combined cycle. Compared to the 2.0 TFSI, the 1.8 TFSI offered a lower purchase price and slightly better fuel efficiency, but at the expense of performance. The 1.8 TFSI appealed to buyers who prioritized style and comfort over outright speed.
Legacy
The EA888 1.8 TFSI engine, in general, has proven to be a relatively reliable unit, although preventative maintenance is crucial. Common issues include carbon buildup on the intake valves (which can be mitigated with regular cleaning) and occasional oil consumption. The six-speed automatic transmission is generally robust, but requires regular fluid changes. Today, the 2015-2018 TT Roadster 1.8 TFSI represents a relatively affordable way to experience Audi’s iconic sports car. Well-maintained examples are readily available on the used car market, offering a stylish and enjoyable driving experience for those seeking a compact and refined roadster.
