| Attribute |
BMW 1 Series Convertible (E88) 135i × | 
Audi TT RS Roadster (8J, facelift 2010) 2.5 TFSI quattro S tronic × |
| General | | |
| Make | BMW | Audi |
| Model | 1 Series | TT |
| Generation | 1 Series Convertible (E88) | TT RS Roadster (8J, facelift 2010) |
| Modification | 135i | 2.5 TFSI quattro S tronic |
| Website | https://www.bmw.com | https://www.audi.com/ |
| Number of doors | 2 | 2 |
| Number of seats | 4 | 2 |
| Body type | Cabriolet | Roadster |
| Transmission | manual | automatic s tronic |
| Number of gears | 6 | 7 |
| Production from (year) | 2008 | 2011 |
| Production to (year) | 2011 | 2014 |
| Performance | | |
| Top speed (km/h) | 250 | 250 |
| Acceleration 0-100 km/h (s) | 5.6 | 4.4 |
| City consumption (l/100km) | 13.3 | 12.4 |
| Extra-urban consumption (l/100km) | 7.1 | 6.4 |
| Combined consumption (l/100km) | 9.4 | 8.6 |
| CO2 emissions (g/km) | 224 | 199 |
| Emission standard | EURO IV | EURO V |
| Drive | | |
| Drive | Rear wheel drive | All wheel drive (4x4) |
| Position of engine | Front,ongitudinal | Front, transversely |
| Fuel | Petrol (Gasoline) | Petrol (Gasoline) |
| Max. power (hp) | 306 | 340 |
| Max. torque (Nm) | 400 | 450 |
| Fuel Engine | | |
| Number of cylinders | 6 | 5 |
| Cylinders arrangement | Inline | Inline |
| Valves per cylinder | 4 | 4 |
| Engine displacement (cm³) | 2,979 | 2,480 |
| Compression ratio | 10.2 | 10 |
| Max. power @ rpm (rpm) | 5,800 | 5,400 |
| Max. torque @ rpm (rpm) | 1,300 | 1,600 |
| Cylinder bore (mm) | 84 | 82.5 |
| Piston stroke (mm) | 89.6 | 92.8 |
| Fuel system | Multi-point injection | Direct injection |
| Valve control | - | Dohc |
| Turbine | Turbocharger | Turbocharger / Intercooler |
| Fuel tank (l) | 53 | 60 |
| Engine oil capacity (l) | 6.5 | - |
| Coolant capacity (l) | 8.2 | - |
| Chassis | | |
| ABS | + | + |
| Front wheel suspension | Double wishbone | Independent, Spring McPherson, with stabilizer |
| Rear wheel suspension | Multi-link independent | Independent, spring multi-link with stabilizer |
| Steering type | Steering rack | Steering rack |
| Power steering | - | Electric Steering |
| Front brakes | Ventilated discs | Ventilated discs |
| Rear brakes | Ventilated discs | Ventilated discs |
| Tires size | - 205/50 R17 89 W
- 225/45 R17 91 W
| |
| Turning radius (m) | 10.7 | 10.7 |
| Dimensions | | |
| Length (mm) | 4,360 | 4,198 |
| Width (mm) | 1,748 | 1,842 |
| Height (mm) | 1,411 | 1,348 |
| Wheelbase (mm) | 2,660 | 2,468 |
| Kerb weight (kg) | 1,600 | 1,535 |
| Gross weight (kg) | 2,040 | 1,855 |
| Minimum boot space (l) | 260 | 250 |
| Maximum boot space (l) | 305 | - |
| Front track (mm) | 1,474 | 1,555 |
| Rear track (mm) | 1,507 | 1,546 |
| Ride height (mm) | 140 | - |
| Drag coefficient (Cd) | 0.34 | 0.32 |