BMW has released pictures and details of its new 7-Series ActiveHybrid
22 September 2008

It won’t be on sale until this time next year, but BMW has responded to Mercedes-Benz’s unveiling of the S400 BlueHybrid by releasing limited details about its own version of the same drivetrain, the 7-Series ActiveHybrid.

Set to make it’s debut at the Paris motor show, the ActiveHybrid will be BMW’s first true hybrid model. It uses a twin-turbocharged 4.4-litre V8 petrol engine that delivers 407bhp and 442lb ft, working in combination with an AC electric motor that can add another 20bhp and 155lb ft of torque.

" target="_self">>> See more pictures of the new BMW 7-Series ActiveHybrid

No performance claims have been made for the ActiveHybrid yet, but BMW claims it returns 15 per cent better fuel consumption than the new 750i upon which it is largely based, suggesting a combined average of around 28mpg.

By mounting the hybrid drivetrain’s lithium-ion battery in the same place as the standard 750i’s lead acid unit, BMW has managed to provide the electric 7 with the same interior and boot space as the standard car. Other systems featured on the new car include further developed versions of the part-time alternator and stop/start systems already offered on other BMW models.

BMW insiders have also confirmed that the same hybrid drivetrain will be developed for the forthcoming ‘baby’ Rolls-Royce saloon.

Greg Kable

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Comments
4

23 September 2008

I'm intrigued as to why BMW and Mercedes aren't doing this with their diesel engines. Twin-turbo 4.4l V8 hardly seems an obvious choice, surely starting with the most economical model and making it better would result in the most guilt-free exec limo (if indeed that is the object of this exercise). I'm sure this goes like stink though...

23 September 2008

Yeah, it does seem odd. Surely what the world needs more is a 320d hybrid, not a 750?

23 September 2008

[quote NiallOswald]

I'm intrigued as to why BMW and Mercedes aren't doing this with their diesel engines. Twin-turbo 4.4l V8 hardly seems an obvious choice, surely starting with the most economical model and making it better would result in the most guilt-free exec limo (if indeed that is the object of this exercise). I'm sure this goes like stink though...

[/quote]

x 2

23 September 2008

I would guess it's because the car is intended for the USA. If you want an economical version of the 7 Series in Europe you can order the 730d. But that's not going to sell so well in a country that doesn't have widespread availability of low sulphur diesel.

I agree that it seems a little odd that it's added to the 4.4l turbocharged v8, rather than the more obvious "economical" 3l six. Maybe it's because their competition over there is the Lexus 450h and 600h. Neither BMW nor Mercedes can currently offer anything similar to the Americans.

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