Comparison GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) 4WD Automatic & Audi A6 Allroad quattro (4G, C7) 3.0 TFSI V6 (310 Hp) quattro S tronic
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| Brand: | GMC | Audi |
| Model: | Sierra 2500HD | A6 |
| Generation: | Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed | A6 Allroad quattro (4G, C7) |
| Engine / modification: | 6.6 V8 (401 Hp) 4WD Automatic | 3.0 TFSI V6 (310 Hp) quattro S tronic |
| Production start: | 2023 year | 2012 year |
| Production end: | 2014 year | |
| Coupe type: | Pick-up | Combi |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 11.8 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.1 l/100 km | |
| Fuel consumption / economy - combined: | 8.9 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 136 l | 65 l |
| Emission standard: | Euro 5 | |
| CO2 emissions: | 206 g/km | |
| Power: | 401 hp | 310 hp |
| Max power in: | 5200 rpm. | 5500-6500 rpm. |
| Maximum speed: | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 5.9 sec | |
| Torque: | 629 Nm @ 4000 rpm. | 440 Nm @ 2900-4500 rpm. |
| Model Engine: | L8T | CGWD, CGXB, CTUA |
| Engine position: | Front, longitudinal | |
| Engine displacement: | 2995 cm3 | |
| Engine oil capacity: | 7.6 l | 6.8 l |
| Coolant: | 14.6 l | 12 l |
| Fuel System: | Direct injection | |
| Aspiration / Turbine: | Naturally aspirated engine | Turbo / Intercooler (Turbocharging / Intercooler) |
| Position of cylinders: | V engine | |
| Valvetrain: | OHV | DOHC |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 10.8 | 10.3 |
| Piston Stroke: | 98 mm | 89 mm |
| Cylinder Bore: | 103.25 mm | 84.5 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7 S tronic | |
| Length: | 6127 mm | 4938 mm |
| Width: | 1898 mm | |
| Width including mirrors: | 2079 mm | 2086 mm |
| Height: | 2031 mm | 1452-1534 mm |
| Wheelbase: | 3795 mm | 2905 mm |
| Front track: | 1731 mm | 1631 mm |
| Rear (Back) track: | 1736 mm | 1596 mm |
| Ride height(clearance): | 258 mm | |
| Front overhang: | 920 mm | |
| Rear overhang: | 1113 mm | |
| Minimum volume of Luggage (trunk): | 565 l | |
| Maximum amount of Luggage (trunk): | 1680 l | |
| Front suspension: | Independent torsion bar, double wishbone | Multi-link suspension |
| Rear suspension: | Independent on trapezoidal lever | |
| Max weight: | 4695 kg | 2505 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 3143 kg | 1855 kg |
| ABS: | yes | |
| Steering type: | Cone worm with recirculation balls | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Max. roof load: | 100 kg | |
| Permitted trailer load with brakes (8%): | 2500 kg | |
| Minimum turning circle (turning diameter): | 11.9 m | |
| Permitted trailer load with brakes (12%): | 6577 kg | 2500 kg |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 100 kg | |
| Tire size: | 245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20 | 235/55 R18 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 20 | 8.0J x 18 |