Comparison Opel Signum (facelift 2005) 1.9 CDTI (120 Hp) & Opel Astra J Sports Tourer (facelift 2012) 1.7 CDTI (100 Hp) Ecotec & BMW 3 Series Touring (G21) 318d (150 Hp) Steptronic
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| Brand: | Opel | Opel | BMW |
| Model: | Signum | Astra | 3 Series |
| Generation: | Signum (facelift 2005) | Astra J Sports Tourer (facelift 2012) | 3 Series Touring (G21) |
| Engine / modification: | 1.9 CDTI (120 Hp) | 1.7 CDTI (100 Hp) Ecotec | 318d (150 Hp) Steptronic |
| Production start: | 2005 year | 2012 year | 2019 year |
| Production end: | 2008 year | 2014 year | |
| Coupe type: | Hatchback | Combi | |
| Num. of Doors: | 5 | 5 | 5 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 7.7 l/100 km | 5.4-5.6 l/100 km | 4.8-5.2 l/100 km |
| Fuel consumption / economy - extra urban: | 5 l/100 km | 4.0-4.2 l/100 km | 4.1-4.4 l/100 km |
| Fuel consumption / economy - combined: | 4.5-4.7 l/100 km | 4.4-4.7 l/100 km | |
| Fuel Type: | Diesel | Diesel | Diesel |
| Drag coefficient: | 0.32 | ||
| Fuel tank volume: | 60 l | 56 l | 40 l |
| Emission standard: | Euro 5 | Euro 6d - TEMP | |
| CO2 emissions: | 120-124 g/km | 114-123 g/km | |
| Power: | 120 hp | 100 hp | 150 hp |
| Max power in: | 3250 rpm. | 4000 rpm. | 4000 rpm. |
| Maximum speed: | 192 km/h | 182 km/h | 215 km/h |
| Acceleration from 0 to 100 km/h: | 12 sec | 12.7 sec | 8.8 sec |
| Torque: | 280 Nm/1750 rpm. | 260 Nm @ 1750-2500 rpm. | 320 Nm @ 1500-3000 rpm. |
| Model Engine: | B47D20 | ||
| Engine position: | Front, transverse | Front, transverse | Front, longitudinal |
| Engine displacement: | 1910 cm3 | 1686 cm3 | 1995 cm3 |
| Fuel System: | Diesel Commonrail | Diesel Commonrail | Diesel Commonrail |
| Aspiration / Turbine: | Turbocharging | Turbo / Intercooler (Turbocharging / Intercooler) | Twin-power turbo |
| Position of cylinders: | Inline | Inline | Inline |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 4 | 4 | 4 |
| Number of valves per cylinder: | 2 | 4 | 4 |
| Compression ratio: | 17.5 | 16.5 | |
| Piston Stroke: | 90.4 mm | 86 mm | 90 mm |
| Cylinder Bore: | 82 mm | 79 mm | 84 mm |
| Wheel Drive: | Front wheel drive | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | - | 8 Steptronic | |
| Number of Gears (manual transmission): | 6 | 6 | |
| Length: | 4651 mm | 4698 mm | 4709 mm |
| Width: | 1798 mm | 1814 mm | 1827 mm |
| Width with mirrors folded: | 1831 mm | ||
| Width including mirrors: | 2013 mm | 2068 mm | |
| Height: | 1460 mm | 1535 mm | 1440 mm |
| Wheelbase: | 2830 mm | 2685 mm | 2851 mm |
| Front track: | 1524 mm | 1541 mm | 1579 mm |
| Rear (Back) track: | 1525 mm | 1551 mm | 1569 mm |
| Ride height(clearance): | 165 mm | ||
| Front overhang: | 799 mm | ||
| Rear overhang: | 1059 mm | ||
| Minimum volume of Luggage (trunk): | 365 l | 500 l | 500 l |
| Maximum amount of Luggage (trunk): | 1410 l | 1550 l | 1510 l |
| Front suspension: | Helical spring | ||
| Rear suspension: | Helical spring | ||
| Max weight: | 2130 kg | 2180 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | |
| Kerb Weight: | 1545 kg | 1660 kg | |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Electric Steering |
| Permitted trailer load with brakes (8%): | 1800 kg | ||
| Minimum turning circle (turning diameter): | 11.4 m | 11.4 m | |
| Permitted trailer load with brakes (12%): | 1800 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 75 kg | ||
| Tire size: | 215/55 R16 | 225/50 R17 98 Y XL | |
| Wheel rims size: | 6.5J x 16 | 7.5J x 17 |