Comparison Audi TT Roadster (8J) 3.2i V6 24V (250 Hp) quattro S tronic & GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) Automatic
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| Brand: | Audi | GMC |
| Model: | TT | Sierra 2500HD |
| Generation: | TT Roadster (8J) | Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed |
| Engine / modification: | 3.2i V6 24V (250 Hp) quattro S tronic | 6.6 V8 (401 Hp) Automatic |
| Production start: | 2006 year | 2023 year |
| Production end: | 2010 year | |
| Coupe type: | Roadster | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 13.0 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.4 l/100 km | |
| Fuel consumption / economy - combined: | 9.5 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 60 l | 136 l |
| Emission standard: | Euro 4 | |
| CO2 emissions: | 227 g/km | |
| Power: | 250 hp | 401 hp |
| Max power in: | 6300 rpm. | 5200 rpm. |
| Maximum speed: | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 5.9 sec | |
| Torque: | 320 Nm @ 2500-3000 rpm. | 629 Nm @ 4000 rpm. |
| Model Engine: | BUB | L8T |
| Engine position: | Front, transverse | |
| Engine displacement: | 3189 cm3 | |
| Engine oil capacity: | 5.5 l | 7.6 l |
| Coolant: | 12.7 l | 14.6 l |
| Fuel System: | Multi-point injection | |
| Aspiration / Turbine: | Naturally aspirated engine | |
| Position of cylinders: | V engine | |
| Valvetrain: | DOHC | OHV |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 11.3 | 10.8 |
| Piston Stroke: | 95.9 mm | 98 mm |
| Cylinder Bore: | 84 mm | 103.25 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 S tronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4178 mm | 6127 mm |
| Width: | 1842 mm | |
| Width including mirrors: | 2079 mm | |
| Height: | 1358 mm | 2031 mm |
| Wheelbase: | 2468 mm | 3795 mm |
| Front track: | 1572 mm | 1731 mm |
| Rear (Back) track: | 1558 mm | 1736 mm |
| Ride height(clearance): | 258 mm | |
| Minimum volume of Luggage (trunk): | 250 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Independent torsion bar, double wishbone |
| Rear suspension: | Independent, spring multi-link with stabilizer | |
| Max weight: | 1810 kg | 4559 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Disc | |
| Kerb Weight: | 1490 kg | 2985 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Hydraulic Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 10.96 m | |
| Permitted trailer load with brakes (12%): | 6577 kg | |
| Tire size: | 245/45 R17 | 245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20 |
| Wheel rims size: | 8.5J x 17 | 7.5J x 17; 8J x 18; 8.5J x 20 |