BMW X3 : Steptronic 8-speed automatic transmission

Steptronic 8-speed automatic transmission
with Auto Start Stop function.

The BMW X3 makes efficiency audible: at higher speeds, you can hear how the 8-speed automatic transmission keeps engine speeds lower. And when you pull up, you'll hear how Auto Start Stop turns off the engine to prevent waste. For lovers of efficient and dynamic driving, it's music to your ears.

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For the first time, BMW has combined the Auto Start Stop function with an automatic transmission. Upon coming to a halt, the vehicle's engine automatically turns off. Then, as you lift your foot from the brake pedal, it comes to life again. Another first: this element of BMW EfficientDynamics is available in the new four-cylinder model xDrive20i and in the straight-six-cylinder models, the BMW xDrive35i, xDribe35d and the xDrive30d.

The eight-speed automatic transmission Steptronic system shifts gears so quickly and smoothly that the only indication is the movement of the tachometer needle. The additional gears and closer spacing in this transmission reduce the engine's rev interval between shifts, so that changing from third to fourth, for example, is practically undetectable. Driving becomes more dynamic, more efficient – and more comfortable.

At higher speeds, the long eighth gear reduces the number of revolutions per minute, resulting in quieter, more fuel-efficient running. The newly developed, highly effective torque converter clutch adds to this outstanding performance, even when you're driving in manual transmission mode.

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Fuel consumption / CO2 emissions

Combined fuel consumption: 7.4 to 12.5 l/100 km
Urban fuel consumption: 8.7 to 17.5 l/100 km
Extra-urban fuel consumption: 6.7 to 9.6 l/100 km

Combined CO2 emissions: 195 to 292 g/km

Further information about the official fuel consumption and the official specific CO₂ emissions for new passenger automobiles can be found in the "New Passenger Vehicle Fuel Consumption and CO₂ Emission Guidelines", which are available free of charge at all sales outlets and from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Str. 1, 73760 Ostfildern, Germany.
 
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