Mercedes SL63 AMG vs BMW M6 - Auto Express

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Porsche 911 Turbo S Vs Nissan GT-R review - Auto Express
Porsche 911 review: Nissan GT-R review: Subscribe to our YouTube channel Subscribe to the mag Ever since it was introduced in 1974, the Porsche 911 turbo has been the point at which the car morphs from sports car into full-on supercar. And if you want even more power, go for this model, the turbo S. For the last decade or so the Porsche's rival has been the Nissan GT-R. It's a technology-filled car, and Nissan has engaged in a top trumps-style battle with Porsche, getting faster Nurburgring times and even faster 0-60 performance. So which one's better away from the restrictions of the road, and which one's going to be faster against the stopwatch? Let's find out in an Auto Express track battle in the video review above. The most powerful 911 in the range, the turbo S provides an extra 39bhp, taking the output of the 3.8-litre straight-six up to 552bhp and delivering a whopping 700Nm of torque. At just under £80,000, the Nissan GT-R is a pound-per-performance bargain compared to the Porsche. Nissan's Technology Pack showcases a 3.8-litre twin-turbo engine which pumps out 542bhp and 632Nm of torque.

BMW M6 Gran Coupe vs Audi RS7 - Auto Express
BMW M6 Gran Coupe review: Audi RS7 review: Subscribe to our YouTube channel Subscribe to the mag This is the new Audi RS7 and its arch-rival, the BMW M6 Gran Coupe. Both are powered by turbocharged V8 engines and have over 500bhp -but do they really justify their nearly £100,000 price tags? Watch our video review to find out. The BMW M6 costs just under £98,000 and features a 4.4-litre twin-turbo V8 with 552bhp and 680Nm of torque. It'll sprint from 0-60 in just 4.2 seconds before hitting a limited top speed of 155mph. The Audi has a 4.0-litre twin-turbo V8 yet despite being down on capacity compared to the BMW it produces the same bhp and has even more torque with a huge 700Nm. Once again top speed is limited to 155mph, but it hits 60 in just 3.9 seconds. So, what's the Audi like to drive? Well, the first thing is that it's so hard to use the performance on the road - it's just so fast that it's impossible to put it into use. The one thing the Audi does have is quattro all-wheel drive and a clever sport differential - that means it doesn't have any of the traction issues that you get in the M6, and it doesn't work it's stability control as hard. There's lots of grip, but the problem is it's just a bit inert - there's not a lot of feel in the steering. Also, the suspension is a bit odd. The ride isn't great - in fact it's pretty awful - and all in all it's not a particularly engaging car despite its speed. It's quite hard to love this car despite the fact that the engine is so great. So how does the BMW compare? If anything the BMW engine has a little bit more character than the Audi engine and there's certainly more fizz to the driving experience. It's not perfect and it troubles the traction control quite a lot on a wet road, though. The biggest problem for this car in a way, though isn't the Audi - it's the M6's sister car, the M5. This car is substantially more expensive than the M5 - about £25,000 more than an M5 - and it doesn't offer a huge amount more in terms of driving. So the BMW is the best to drive but it's also the nicest to sit in, with its stylish interior and sporty wrap-around cockpit. The Audi's still feels posh and is loaded with gadgets but it lacks the BMW's wow factor. However with its hatchback boot the Audi is the more practical of the pair. It might cost a lot more money than the BMW M5 but we'd go for the M6 Gran Coupe - it looks great, sounds fantastic and most importantly it's more fun to drive than the Audi RS7.

Mercedes SL63 AMG video review - Auto Express
We travel to the south of France to test the lighter, faster, more powerful and more efficient new SL63 AMG. Read more: g.html Subscribe to Auto Express magazine and get 6 issues for £1 plus a free gift: The Mercedes SL has always been a dream car, but it's the range-topping AMG versions that have regularly appeared on the driveways of the rich and famous. This new SL63 AMG is lighter, faster, more powerful and more efficient than the old flagship, so could it be the best yet? New editor Sam Hardy travelled to the South of France to find out. The new SL63 AMG is powered by a 530bhp 5.5-litre twin-turbocharged V8 and has a price tag of around £100,000. Mercedes also offers a Performance Package, which adds another £10,000 to the price, takes power to 557bhp and increases peak torque from 800Nm to 900Nm.

Nissan Juke-R vs GT-R track test - Auto Express
We pit the new Nissan Juke-R against the GT-R Subscribe to our YouTube channel Subscribe to the mag