Starting in the spring of 2012, all BMW X3 model variants will be powered by engines equipped with BMW TwinPower Turbo Technology. The latest addition to the drive train portfolio is the 2-litre, four-cylinder 180 kW/245 hp petrol engine, which gives the BMW X3 xDrive28i even more power and efficiency. The technology package employed in this engine comprises a supercharging system operating according to the Twin Scroll principle, High Precision Injection with direct fuel injection, VALVETRONIC variable valve control and double VANOS variable camshaft control. This combination guarantees not only spontaneous throttle response and sporty power delivery continuing into the high load range, but also fuel economy that is outstandingly favourable even for a petrol engine of this performance class.
Compared to the predecessor engine, the new power unit mobilises 40 percent higher maximum torque, which has now increased to 350 Nm and is available within a significantly broader engine speed range between 1,250 and 4,800 rpm. Thanks to the boost in pulling power and response resulting from this, the new BMW X3 xDrive28i accelerates from 0 to 100 km/h in just 6.7 seconds – 0.2 seconds faster than the predecessor model. The advancement made in terms of efficiency is even more significant. With an average fuel consumption of 7.5 litres/100 km in the EU test cycle and a CO2 emission level of 175 grams per kilometre, previous figures have been undercut by around 17 percent.
The new power unit comes as standard in conjunction with the eight-speed automatic transmission. The intelligent four-wheel drive system BMW xDrive with electronically controlled and variable power distribution between the front and real wheels provides optimum transfer of torque to the road and off-road terrain.