New BMW 3 Series vs Audi A4
* Key rivals compared * View the stats here * New 3 Series on sale February...

BMWs all-new 3 Series goes on sale in February 2012. It promises to be bigger and better than ever, but it will face some increasingly tough competition.
Its chief rival will be the Audi A4, and an updated version of this will go on sale at around the same time as the 3 Series. It will come with cleaner, more powerful engines and cosmetic changes similar to those made to the updated A5 range.
For now, though, weve compiled the key statistics for the latest A4 saloon and all-new BMW 3 Series, to hep you decide which is right for you.
Prices
BMW 3 Series
From 24,880 full pricing to be confirmed
Audi A4
22,200 - 37,330
Dimensions
BMW 3 Series
Length: 462cm
Width: 181cm (excluding mirrors)
Height: 142cm
Wheelbase: 281cm
Boot capacity: 460 litres
Audi A4
Length: 470cm
Width: 201cm (including mirrors)
Height: 143cm
Wheelbase: 281cm
Boot capacity: 490 litres
Engines
BMW 3 Series
Petrol: 2.0-litre, 3.0-litre: 242bhp to 302bhp
Diesel: 2.0-litre: 114bhp to 181bhp
CO2 emissions: 109g/km - 118g/km
Audi A4
Petrol: 1.8-litre, 2.0-litre, 3.0-litre, 3.2-litre: 118bhp to 328bhp
Diesel: 2.0-litre, 2.7-litre, 3.0-litre: 134bhp to 237bhp
CO2 emissions: 120g/km - 234 g/km
Trims
BMW 3 Series
ES, SE, Sport, Modern, Luxury, M Sport
Audi A4
Standard, SE, Technik, S line, Black Edition, S4