Comparison Vauxhall Signum 1.8i 16V ECOTEC (122 Hp) & Audi S4 Avant (8E,B7) 4.2i V8 (344 Hp) quattro & Audi A6 Avant (4B,C5, facelift 2001) 2.5 TDI V6 (163 Hp)
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| Brand: | Vauxhall | Audi | Audi |
| Model: | Signum | S4 | A6 |
| Generation: | Signum | S4 Avant (8E,B7) | A6 Avant (4B,C5, facelift 2001) |
| Engine / modification: | 1.8i 16V ECOTEC (122 Hp) | 4.2i V8 (344 Hp) quattro | 2.5 TDI V6 (163 Hp) |
| Production start: | 2003 year | 2004 year | 2002 year |
| Production end: | 2008 year | 2008 year | 2003 year |
| Coupe type: | Hatchback | Combi | Combi |
| Num. of Doors: | 5 | 5 | 5 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 11.0 l/100 km | 19.6 l/100 km | 9.7 l/100 km |
| Fuel consumption / economy - extra urban: | 6.1 l/100 km | 9.8 l/100 km | 5.4 l/100 km |
| Fuel consumption / economy - combined: | 7.9 l/100 km | 13.4 l/100 km | 6.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.28 | 0.31 | 0.32 |
| Fuel tank volume: | 63 l | 70 l | |
| Emission standard: | Euro 4 | Euro 4 | Euro 4 |
| CO2 emissions: | 190 g/km | 322 g/km | 186 g/km |
| Power: | 122 hp | 344 hp | 163 hp |
| Max power in: | 6000 rpm. | 7000 rpm. | 4000 rpm. |
| Maximum speed: | 196 km/h | 250 km/h | 220 km/h |
| Acceleration from 0 to 100 km/h: | 5.8 sec | 9.5 sec | |
| Torque: | 167 Nm @ 3800 rpm. | 410 Nm @ 3500 rpm. | 310 Nm @ 1400-3500 rpm. |
| Model Engine: | BBK | BDG, BFC | |
| Engine position: | Front, transverse | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1796 cm3 | 4163 cm3 | 2496 cm3 |
| Engine oil capacity: | 9.0 l | 5.5 l | |
| Coolant: | 12.2 l | 6.0 l | |
| Fuel System: | Multi-point injection | Multi-point injection | Diesel - Standard diesel injection (SDI) |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | ||
| Position of cylinders: | Inline | V engine | V engine |
| Valvetrain: | DOHC | DOHC | DOHC |
| Number of cylinders: | 4 | 8 | 6 |
| Number of valves per cylinder: | 4 | 5 | 4 |
| Compression ratio: | 10.5 | 11 | 18 |
| Piston Stroke: | 88.2 mm | 92.8 mm | 86.4 mm |
| Cylinder Bore: | 80.5 mm | 84.5 mm | 78.3 mm |
| Wheel Drive: | Front wheel drive | All wheel drive (4x4) | Front wheel drive |
| Number of Gears (manual transmission): | 5 | 6 | 6 |
| Length: | 4651 mm | 4586 mm | 4796 mm |
| Width: | 1798 mm | 1781 mm | 1810 mm |
| Width including mirrors: | 2036 mm | ||
| Height: | 1466 mm | 1441 mm | 1477 mm |
| Wheelbase: | 2830 mm | 2651 mm | 2760 mm |
| Front track: | 1516 mm | 1540 mm | |
| Rear (Back) track: | 1512 mm | 1569 mm | |
| Minimum volume of Luggage (trunk): | 365 l | 442 l | 455 l |
| Maximum amount of Luggage (trunk): | 1410 l | 1354 l | 1590 l |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Independent multi-link | Independent multi-link |
| Rear suspension: | Multi-link independent | Independent on trapezoidal lever | Semi-independent, spring |
| Max weight: | 2270 kg | 2165 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Disc |
| Kerb Weight: | 1415 kg | 1720 kg | 1615 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | ||
| Max. roof load: | 75 kg | 100 kg | |
| Permitted trailer load with brakes (8%): | 1700 kg | 1900 kg | |
| Minimum turning circle (turning diameter): | 11.5 m | 11.68 m | |
| Permitted trailer load with brakes (12%): | 1500 kg | 1700 kg | |
| Permitted trailer load without brakes: | 750 kg | 750 kg | |
| Permitted towbar download: | 80 kg | 85 kg | |
| Tire size: | 235/40 R18 | 205/55 R16 | |
| Wheel rims size: | 8J x 18 | 7J x 16 |