Comparison GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) Automatic & Audi A4 Cabriolet (B7 8H) 3.2 FSI V6 (255 Hp) quattro Tiptronic
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| Brand: | GMC | Audi |
| Model: | Sierra 2500HD | A4 |
| Generation: | Sierra 2500HD V (GMTT1XX) Double Cab Long Bed | A4 Cabriolet (B7 8H) |
| Engine / modification: | 6.6 V8 (401 Hp) Automatic | 3.2 FSI V6 (255 Hp) quattro Tiptronic |
| Production start: | 2020 year | 2005 year |
| Production end: | 2023 year | 2008 year |
| Coupe type: | Pick-up | Cabriolet |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 4 |
| Fuel consumption / economy - urban: | 16.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 8.2 l/100 km | |
| Fuel consumption / economy - combined: | 11.1 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | |
| Fuel tank volume: | 136 l | 63 l |
| Emission standard: | Euro 4 | |
| CO2 emissions: | 266 g/km | |
| Power: | 401 hp | 255 hp |
| Max power in: | 5200 rpm. | 6500 rpm. |
| Maximum speed: | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 7.4 sec | |
| Torque: | 629 Nm @ 4000 rpm. | 330 Nm @ 3250 rpm. |
| Model Engine: | L8T | AUK, BKH |
| Engine position: | Front, longitudinal | |
| Engine displacement: | 3123 cm3 | |
| Engine oil capacity: | 7.6 l | 6.2 l |
| Coolant: | 14.6 l | 12 l |
| Fuel System: | Direct injection | |
| Aspiration / Turbine: | Naturally aspirated engine | |
| Position of cylinders: | V engine | |
| Valvetrain: | OHV, VVT | DOHC |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 10.8 | 12.5 |
| Piston Stroke: | 98 mm | 92.8 mm |
| Cylinder Bore: | 103.25 mm | 84.5 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 6 Tiptronic | |
| Length: | 6514 mm | 4573 mm |
| Width: | 1777 mm | |
| Width including mirrors: | 2079 mm | |
| Height: | 2027 mm | 1391 mm |
| Wheelbase: | 4127 mm | 2650 mm |
| Front track: | 1731 mm | 1522 mm |
| Rear (Back) track: | 1736 mm | 1518 mm |
| Ride height(clearance): | 258 mm | |
| Minimum volume of Luggage (trunk): | 246 l | |
| Maximum amount of Luggage (trunk): | 315 l | |
| Front suspension: | Independent multi-link | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 4627 kg | 2220 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Disc | |
| Kerb Weight: | 2967 kg | 1740 kg |
| ABS: | yes | |
| Steering type: | Cone worm with recirculation balls | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Hydraulic Steering |
| Permitted trailer load with brakes (8%): | 1800 kg | |
| Minimum turning circle (turning diameter): | 11.1 m | |
| Permitted trailer load with brakes (12%): | 6577 kg | 1800 kg |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 80 kg | |
| Tire size: | 265/70 R17; 245/75 R17; 275/70 R18 | 215/55 R16 |
| Wheel rims size: | 7.5J x 17; 8J x 18 | 7J x 16 |