The BMW Z4 sDrive28i is a 2 door convertible/cabriolet style automobile with a front located engine supplying power to the rear wheels.
The Z4 sDrive28i forms part of BMW's E89 model series.
The 2 litre engine is a turbocharged, double overhead camshaft, 4 cylinder that develops 242 bhp (245 PS/180 kW) of power at 5000-6500 rpm, and maximum torque of 350 N·m (258 lb·ft/35.7 kgm) at 1250-4800 rpm.
The engine supplies its power through to the wheels via an 8 speed automatic 'box.
The BMW Z4 sDrive28i weighs a claimed 1495 kg at the kerb.
Maximum speed claimed is 250 km/h, which is 155 mph, stated fuel consumption is 9.1/5.6/6.8 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 159.0 g/km.
Full specs
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| bodywork | |||
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| Body type | 2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2496 mm | 98.3 inches | |
| Track/tread (front) | 1511 mm | 59.5 inches | |
| Track/tread (rear) | 1559 mm | 61.4 inches | |
| Length | 4239 mm | 166.9 inches | |
| Width | 1790 mm | 70.5 inches | |
| Height | 1291 mm | 50.8 inches | |
| Ground clearance | 130 mm | 5.1 inches | |
| length:wheelbase ratio | 1.7 | ||
| Kerb weight | 1495 kg | 3296 lb | |
| Weight distribution | |||
| fuel tank capacity | 55 litres | 12.1 [14.5] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.34 | ||
| Frontal area | 1.96 m² | ||
| CdA | 0.67 | ||
| Powertrain | |||
| engine type | turbocharged petrol | ||
| Engine manufacturer | BMW | ||
| Engine code | N20B20O0 | ||
| Cylinders | Straight 4 | ||
| Capacity | 2 litre 1997 cc (121.864 cu in) |
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| Bore × Stroke | 84 × 90.1 mm
3.31 × 3.55 in |
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| Bore/stroke ratio | 0.93 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 16 valves in total |
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| maximum power output | 245 PS (242 bhp) (180 kW) at 5000-6500 rpm |
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| maximum torque | 350 Nm (258 ft·lb) (35.7 kgm) at 1250-4800 rpm |
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| Specific output | 90.4 kW/litre 122.9 ps/litre 121.2 bhp/litre 1.99 bhp/cu in |
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| Specific torque |
175.26 Nm/litre
2.12 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.3:1 | ||
| Fuel system | direct petrol injection | ||
| bmep (brake mean effective pressure) | 2202.4 kPa (319.4 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 499.25 cc | ||
| Aspiration | Turbo | ||
| Compressor | |||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 5.7 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | 25.3 s | ||
| Maximum speed | 250 km/h (155 mph) | ||
| Power-to-weight ratio | Higher is better 164.12 PS/tonne (1000 kg) 0.16 PS/kg 120.71 kW/tonne (1000 kg) 0.12 kW/kg 161.87 bhp/tonne (1000 kg) 0.16 bhp/kg 0.07 bhp/lb |
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| Weight-to-power ratio | Lower is better 8.28 kg/kW 13.84 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 9.1/5.6/6.8 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 9.1/5.6/6.8 l/100km urban/extra-urban/combined | ||
| km/litre | 11.0/17.9/14.7 km/l urban/extra-urban/combined | ||
| UK MPG | 31.0/50.4/41.5 UK MPG urban/extra-urban/combined | ||
| US MPG | 25.8/42.0/34.6 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 159.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | G | ||
| CO2 Effizienz (DE) | D | ||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8J x 17 | ||
| Wheel size rear | 8J x 17 | ||
| Tyres front | 225/45 R 17 91W | ||
| Tyres rear | 225/45 R 17 91W | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 330 mm | ||
| Rear brake diameter | 300 mm | ||
| Braked area | |||
| Gearbox | 8 speed automatic | ||
| Top gear ratio | 0.67 | ||
| Final drive ratio | 3.73 | ||
| general | |||
| Carfolio.com ID | 250954 | ||
| Production total | |||
| Model code | |||
| Model family | E89 | ||
| RAC rating | 17.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2011 BMW Z4 sDrive28i Automatic added 2011-08-03. Last modified 2020-02-02. |
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