After unveiling the 2009 7-Series ,more informations about the hybrid version of the luxury sedan are being offered by Car Magazine. The bad news is that even hybrid the future 7-Series will not be that fuel efficient as you were expecting. And not cheap!

Powered by the latest lithium-ion batteries, the forthcoming 4.4-litre V8 petrol-electric version will struggle to match the astonishing 39.2mpg and 192g/km of CO2 of the new six-cylinder diesel, especially when BMW will launch stop-start technology for the whole range within two years.

The price for the hybrid version will be around £70,000.

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