A new 3.0-litre V6 petrol engine will be added to the Mercedes-Benz CLS, CLS Shooting Brake and next-gen S-class ranges in the UK next year. The 328bhp twin-turbo unit will go in models badged CLS400 and S400. It makes its debut in the facelifted E-class, but this model will not reach the UK. Another E-class not for sale here is the all-wheel-drive E63 AMG 4Matic.

The Cadillac ELR range-extended coupé will be built at GM's Detroit-Hamtramck plant alongside the Chevrolet Volt and Opel Ampera. GM is to invest $35m in the plant. The Volt/Ampera-based model will go on sale in late 2013.

It is “not possible” for BMW to hit its CO2 targets without its electric i sub-brand, but BMW Group boss Harold Kruger said he doesn’t know what percentage of its sales will be EVs by 2020 because of uncertainty on how the market will react. “We don’t have a crystal ball,” he said.