Kia is an increasingly big player in the European market, but until now it hasn’t had a noteworthy family saloon. The new Kia Optima aims to change that, but can it compete with established rivals like the Ford Mondeo? Read the review at http://www.autocar.co.uk/CarReviews/RoadTestsHistory/Kia-Optima-1.7-CRDi-2-Tech/261251/

The new Porsche 911 is the most important new sports car of 2012. Thanks to an all-new platform, revised engines and improved dynamics, it’s more poised and competent than ever. Steve Sutcliffe talks us through the highlights. Read the review at http://www.autocar.co.uk/CarReviews/RoadTestsHistory/Porsche-911-3.4-Carrera/261765/

The highs and lows of living with the 6.2-litre V8 Mercedes SLS supercar day-to-day for a year. Read the review at http://www.autocar.co.uk/CarReviews/RoadTestsHistory/Mercedes-Benz-SLS-6.2-V8-AMG/250724/

The BMW M5 and Nissan GT-R are not conventional rivals, but both have around 550bhp, cost nearly £75k and promise brutal performance. So which one wins our series of tests?

What would you like to see go head-to-head in our next drag race? Let us know in the comments below

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WATCH NEXT:
Lamborghini Aventador vs 911 GT2 RS vs Mercedes SLS https://goo.gl/Wx48tS
Corvette ZR1 vs Lambo SV https://goo.gl/fpBVVG
Nissan GT-R vs Formula 3 car https://goo.gl/A5aRbx

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Can the Chrysler Delta bring new levels of appeal and ability to the American marque with its Lancia design and flair? We test the diesel 1.6 M-Jet SR to find out. Read the review at http://www.autocar.co.uk/CarReviews/FirstDrives/Chrysler-Delta-1.6-M-Jet-120-SR/259336/

The 270bhp, 550kg, rear-wheel drive Ariel Atom Mugen sounds like the ideal drifting machine. It isn’t. Steve Sutcliffe explains why the gratuitous powersliding you’ll see here wasn’t easy. Read the review at http://www.autocar.co.uk/CarReviews/FirstDrives/Ariel-Atom-3-Mugen/256897/

Enthusiasts will have to wait for the new Ford Focus ST to get a serious fast Ford, but the 161bhp turbodiesel Focus Zetec S claims to offer entertainment and economy. Can it deliver? Read the review at http://www.autocar.co.uk/CarReviews/FirstDrives/Ford-Focus-2.0-TDCi-163-Zetec-S/260373/

Bentley’s new 4.0-litre bi-turbo V8 is 40 per cent more efficient than the company’s W12, yet still produces 500bhp. But how well does it deliver in the new Bentley Continental GT? Read the review at http://www.autocar.co.uk/CarReviews/FirstDrives/Bentley-Continental-GT-V8/260698/

The 1.6-litre, 134bhp Suzuki Swift Sport doesn’t sound too exciting on paper, but it’s one of the most entertaining warm hatches out there. Read the review at http://www.autocar.co.uk/CarReviews/FirstDrives/Suzuki-Swift-1.6-Sport/259731/