Comparison Opel Astra G 1.7 CDTI (80 Hp) & Opel Diplomat B 2.8 E (165 Hp) & Cadillac ATS Coupe V 3.6 V6 (461 Hp) Automatic
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| Brand: | Opel | Opel | Cadillac |
| Model: | Astra | Diplomat | ATS |
| Generation: | Astra G | Diplomat B | ATS Coupe |
| Engine / modification: | 1.7 CDTI (80 Hp) | 2.8 E (165 Hp) | V 3.6 V6 (461 Hp) Automatic |
| Production start: | 2002 year | 1969 year | 2016 year |
| Production end: | 2004 year | 1975 year | |
| Coupe type: | Sedan | Sedan | Coupe |
| Num. of Doors: | 4 | 4 | 2 |
| Num. of seats: | 5 | 5 | 4 |
| Fuel consumption / economy - urban: | 6 l/100 km | 14.7 l/100 km | |
| Fuel consumption / economy - extra urban: | 3.8 l/100 km | 9.8 l/100 km | |
| Fuel consumption / economy - combined: | 4.6 l/100 km | ||
| Fuel Type: | Diesel | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.29 | 0.45 | |
| Fuel tank volume: | 52 l | 80 l | 62.5 l |
| CO2 emissions: | 122 g/km | ||
| Power: | 80 hp | 165 hp | 461 hp |
| Max power in: | 4400 rpm. | 5600 rpm. | 5750 rpm. |
| Maximum speed: | 173 km/h | 190 km/h | |
| Acceleration from 0 to 100 km/h: | 14 sec | 10.5 sec | |
| Torque: | 170 Nm/1800 rpm. | 229 Nm @ 4100-4600 rpm. | 603 Nm @ 3500 rpm. |
| Model Engine: | Z17DTL | LF4 | |
| Engine position: | Front, transverse | Front, longitudinal | |
| Engine displacement: | 1686 cm3 | 2784 cm3 | 3564 cm3 |
| Engine oil capacity: | 6.6 l | ||
| Coolant: | 10.2 l | ||
| Fuel System: | Diesel Commonrail | Multi-point injection | Direct injection |
| Maximum engine speed: | 6500 rpm. | ||
| Aspiration / Turbine: | Turbocharging | ||
| Position of cylinders: | Inline | Inline | V engine |
| Valvetrain: | DOHC | SOHC | DOHC |
| Number of cylinders: | 4 | 6 | 6 |
| Number of valves per cylinder: | 4 | 2 | 4 |
| Compression ratio: | 18.4 | 9.5 | 10.2 |
| Piston Stroke: | 86 mm | 69.8 mm | 85.6 mm |
| Cylinder Bore: | 79 mm | 92 mm | 94 mm |
| Wheel Drive: | Front wheel drive | Rear wheel drive | |
| Number of Gears (automatic transmission): | - | 8 | |
| Number of Gears (manual transmission): | 5 | 4 | |
| Length: | 4252 mm | 4920 mm | 4691 mm |
| Width: | 1709 mm | 1852 mm | 1841 mm |
| Width including mirrors: | 1967 mm | ||
| Height: | 1425 mm | 1450 mm | 1384 mm |
| Wheelbase: | 2606 mm | 2850 mm | 2775 mm |
| Front track: | 1484 mm | 1510 mm | 1538 mm |
| Rear (Back) track: | 1460 mm | 1512 mm | 1559 mm |
| Ride height(clearance): | 130 mm | 150 mm | |
| Front overhang: | 791 mm | ||
| Rear overhang: | 855 mm | ||
| Minimum volume of Luggage (trunk): | 460 l | 475 l | 295 l |
| Front suspension: | The depreciated rack | Independent, Spring McPherson, with stabilizer | |
| Rear suspension: | Wishbone | Multi-link independent | |
| Max weight: | 1725 kg | 2030 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Drum | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1205 kg | 1530 kg | |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Electric Steering | |
| Minimum turning circle (turning diameter): | 11 m | 11.8 m | 11.7 m |
| Permitted trailer load with brakes (12%): | 1400 kg | ||
| Permitted trailer load without brakes: | 700 kg | ||
| Tire size: | 195/60 R15 | 255/35 ZR18; 275/35 ZR18 | |
| Wheel rims size: | R15 | 9J x 18; 9.5J x 18 |