The world's most powerful hybrid, BMW's Badged ActiveHybrid X6, will be launched at the Frankfurt Motor Show this September. BMW is actually bringing two hybrid models; the other one is the ActiveHybrid 7. The two models will use V8 petrol engines, but while the X6 features two electric motors, the 7-series has one. The X6's drivetrain, which produces a combined 478bhp and 575lb ft., enables the car to reach 62mph in 5.6sec, just 0.2sec slower than the xDrive50i.
BMW also claims combined fuel consumption of 28.5mpg, with CO2 emissions of 231g/km. When run on electric power, the car can only go up to 37mph for 1.6 miles. BMW has attempted to differentiate the ActiveHybrid X6 from a regular X6 with the addition of what it calls a powerdome on the bonnet -- a bulge in the sheetmetal -- and it comes in a new metallic blue available only on this model. The downside is that all this additional technology means the ActiveHybrid X6 weighs in at 2450kg, making it 185kg heavier than a standard V8 X6. Its maximum permissible vehicle weight is 3100kg.
The 7-series model is less powerful (459bhp and 561lb ft) but is faster, cleaner and more fuel-efficient. The car is capable of going from 0-62mph in 4.9sec, returns 29.1mpg and emits 219g/km of CO2. However, it is not a full hybrid and can't run on the electric motor alone. It's merely a back-up for the V8. The electric motor and its ancillaries are similar to those used in the Mercedes-Benz S400 hybrid, which uses lithium ion batteries. After all, BMW and Daimler co-developed the technology. [via autocar]