Comparison Opel Astra G 2.0 Ecotec 16V (136 Hp) Automatic & GMC Sierra 2500HD V (GMTT1XX) Regular Cab Long Bed 6.6 Duramax TD V8 (445 Hp) Automatic & Chevrolet Trailblazer II 3.6 V6 (236 Hp) 4WD Automatic
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| Brand: | Opel | GMC | Chevrolet |
| Model: | Astra | Sierra 2500HD | Trailblazer |
| Generation: | Astra G | Sierra 2500HD V (GMTT1XX) Regular Cab Long Bed | Trailblazer II |
| Engine / modification: | 2.0 Ecotec 16V (136 Hp) Automatic | 6.6 Duramax TD V8 (445 Hp) Automatic | 3.6 V6 (236 Hp) 4WD Automatic |
| Production start: | 1998 year | 2020 year | 2012 year |
| Production end: | 2000 year | 2023 year | 2016 year |
| Coupe type: | Hatchback | Pick-up | SUV |
| Powertrain Architecture: | Internal Combustion engine | Internal Combustion engine | |
| Num. of Doors: | 3/5 | 2 | 5 |
| Num. of seats: | 5 | 2 | 7 |
| Fuel consumption / economy - urban: | 13.3 l/100 km | ||
| Fuel consumption / economy - extra urban: | 7 l/100 km | ||
| Fuel consumption / economy - combined: | 9.3 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.28 | ||
| Fuel tank volume: | 52 l | 106 l | 76 l |
| Emission standard: | Euro 2 | ||
| CO2 emissions: | 224 g/km | ||
| Power: | 136 hp | 445 hp | 236 hp |
| Max power in: | 5600 rpm. | 2800 rpm. | 6500 rpm. |
| Maximum speed: | 200 km/h | ||
| Acceleration from 0 to 100 km/h: | 10.5 sec | ||
| Torque: | 188 Nm @ 3200 rpm. | 1234 Nm @ 1600 rpm. | 329 Nm @ 2800 rpm. |
| Model Engine: | X20XEV | Duramax L5P | LFX |
| Engine position: | Front, transverse | ||
| Engine displacement: | 1998 cm3 | 6604 cm3 | 3564 cm3 |
| Engine oil capacity: | 4.25 l | 9.5 l | |
| Coolant: | 6.7-7.2 l | 29.1 l | |
| Fuel System: | Multi-point injection | ||
| Aspiration / Turbine: | Naturally aspirated engine | ||
| Position of cylinders: | Inline | ||
| Valvetrain: | DOHC | OHV | DOHC, VVT |
| Number of cylinders: | 4 | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 10.8 | 16 | 10.2 |
| Piston Stroke: | 86 mm | 99 mm | |
| Cylinder Bore: | 86 mm | 103 mm | |
| Wheel Drive: | Front wheel drive | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 4 | ||
| Length: | 4110 mm | 5982 mm | 4878 mm |
| Width: | 1709 mm | 1902 mm | |
| Width including mirrors: | 1989 mm | 2076 mm | 2132 mm |
| Height: | 1425 mm | 2030 mm | 1848 mm |
| Wheelbase: | 2606 mm | 3595 mm | 2845 mm |
| Front track: | 1464 mm | 1731 mm | 1570 mm |
| Rear (Back) track: | 1452 mm | 1736 mm | 1588 mm |
| Ride height(clearance): | 130 mm | 259 mm | 220-232 mm |
| Approach angle: | 31 ° | ||
| Departure angle: | 22 ° | ||
| Front overhang: | 791 mm | 948 mm | |
| Rear overhang: | 713 mm | 1085 mm | |
| Minimum volume of Luggage (trunk): | 370 l | 235 l | |
| Maximum amount of Luggage (trunk): | 1180 l | 1830 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Double wishbone | |
| Rear suspension: | Semi-independent, spring | ||
| Max weight: | 1725 kg | 4785 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Disc | Disc | |
| Kerb Weight: | 1225 kg | 3161 kg | 2035 kg |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Hydraulic Steering |
| Max. roof load: | 100 kg | ||
| Minimum turning circle (turning diameter): | 10.8 m | ||
| Permitted trailer load with brakes (12%): | 6577 kg | 2500 kg | |
| Permitted towbar download: | 75 kg | ||
| Tire size: | 195/60 R15 V | 235/80 R17; 265/70 R17; 245/75 R17; 265/70 R18; 265/60 R20 | 245/70 R16; 265/60 R18 |
| Wheel rims size: | 6.5J x 15 ET45 | 7.5J x 17; 8J x 18; 8.5J x 20 | 6.5J x 16; 7.5J x 18 |