Bentley Continental (2012): new gearbox, Speed specs

Bentley is cutting the average CO2 output across its range, but don't worry; they're not cheating with a flying-B-badged VW Up (take note, Aston Martin-Toyota). Instead, Bentley's fitting a new gearbox to all new two-door Continental models. Meanwhile, we've got all the details on the fastest Bentley road car ever: the new Continental GT Speed.

New Opel Monza Concept at Frankfurt 2013 signals a new big coupe from Vauxhall

The Opel Monza (1980s Monza pictured) will make a return at Frankfurt There was a time, for those not old enough to remember, when mainstream car makers produced big saloons and coupes. But no more. With very few (low-selling) exceptions, car makers like Vauxhall and Ford have given up their full-sized saloons and downsized, with SUVs of varying sizes now seen as the real future.

Autoweek in review: The Cayenne Turbo S gets more power, we drive the new Aston Martin Vanquish, and a Porsche 962 for the street

The 2013 Porsche Cayenne Turbo S will now have 542 horsepower. The Cayenne Turbo S will sprint from 0 to 62 mph in 4.2 seconds, with a top speed of 176 mph. Click here for more details.