Comparison BMW Z4 (E89, facelift 2013) 20i (184 Hp) sDrive Automatic & Volkswagen Derby (86) 0.9 (40 Hp) & Audi A8 (D4, 4H) 3.0 TFSI V6 (290 Hp) quattro Tiptronic
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| Brand: | BMW | Volkswagen | Audi |
| Model: | Z4 | Derby | A8 |
| Generation: | Z4 (E89, facelift 2013) | Derby (86) | A8 (D4, 4H) |
| Engine / modification: | 20i (184 Hp) sDrive Automatic | 0.9 (40 Hp) | 3.0 TFSI V6 (290 Hp) quattro Tiptronic |
| Production start: | 2013 year | 1977 year | 2010 year |
| Production end: | 2016 year | 1981 year | 2013 year |
| Coupe type: | Cabriolet | Sedan | Sedan |
| Num. of Doors: | 2 | 4 | |
| Num. of seats: | 2 | 5 | |
| Fuel consumption / economy - urban: | 9.4 l/100 km | 13.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.3 l/100 km | 7.1 l/100 km | |
| Fuel consumption / economy - combined: | 6.8 l/100 km | 9.3 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.34 | 0.27 | |
| Fuel tank volume: | 55 l | 90 l | |
| Emission standard: | EURO VI | Euro 5 | |
| CO2 emissions: | 159 g/km | 217 g/km | |
| Power: | 184 hp | 40 hp | 290 hp |
| Max power in: | 5000 rpm. | 4850-6500 rpm. | |
| Maximum speed: | 232 km/h | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 6.9 sec | 6.1 sec | |
| Torque: | 270 Nm @ 1250-4500 rpm. | 420 Nm @ 2500-4850 rpm. | |
| Model Engine: | CGWA, CGXA | ||
| Engine position: | Front, longitudinal | Front, longitudinal | |
| Engine displacement: | 1997 cm3 | 2995 cm3 | |
| Engine oil capacity: | 5.75 l | 6.8 l | |
| Coolant: | 8.5 l | ||
| Fuel System: | Direct injection | Direct injection | |
| Aspiration / Turbine: | Twin-power turbo | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | Inline | V engine | |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 4 | 6 | |
| Number of valves per cylinder: | 4 | 4 | |
| Compression ratio: | 10 | 10.3 | |
| Piston Stroke: | 90.1 mm | 89 mm | |
| Cylinder Bore: | 84 mm | 84.5 mm | |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) | |
| Number of Gears (automatic transmission): | 8 | 8 Tiptronic | |
| Length: | 4239 mm | 5137 mm | |
| Width: | 1790 mm | 1949 mm | |
| Width including mirrors: | 2111 mm | ||
| Height: | 1291 mm | 1460 mm | |
| Wheelbase: | 2496 mm | 2992 mm | |
| Front track: | 1511 mm | 1644 mm | |
| Rear (Back) track: | 1559 mm | 1635 mm | |
| Ride height(clearance): | 130 mm | 120 mm | |
| Front overhang: | 1003 mm | ||
| Rear overhang: | 1142 mm | ||
| Minimum volume of Luggage (trunk): | 180 l | 510 l | |
| Maximum amount of Luggage (trunk): | 310 l | 906 l | |
| Front suspension: | Double wishbone | Multi-link suspension | |
| Rear suspension: | Multi-link independent | Independent on trapezoidal lever | |
| Max weight: | 1750 kg | 2530 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Ventilated discs | Ventilated discs | |
| Kerb Weight: | 1420 kg | 1880 kg | |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | Electric Steering | |
| Max. roof load: | 100 kg | ||
| Permitted trailer load with brakes (8%): | 2300 kg | ||
| Minimum turning circle (turning diameter): | 10.7 m | 12.7 m | |
| Permitted trailer load with brakes (12%): | 2300 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 95 kg | ||
| Tire size: | 225/45 R17 | 235/60 R17 | |
| Wheel rims size: | 8J x 17 | 8.0J x 17 |