What Car? says...

Just because you’re in the market for a seemingly sensible saloon or estate, there’s no need for driving to become a tedious chore. Not when, among the fuel-sipping diesels, hybrids and downsized petrol engines on offer, there are cars like the Mercedes CLA 45.

Now, what sits under the CLA 45’s bonnet might not seem all that special, but it's no ordinary 2.0-litre petrol engine. This one is hand built using racing knowhow to produce a mighty 415bhp.