Model tested: Porsche Cayenne Diesel
Price: £44,178
Date tested: June 2010
Road tester: Stuart Milne

The second-generation Porsche Cayenne has some big boots to fill. The original became Porsche's biggest-selling car, shifting even more than the iconic 911 - and that launched in 1963.

So it shocked the establishment when the original Cayenne rewrote the rules on what a full-size SUV could do. Until then, SUVs were generally slow and lumbering, but the Cayenne was a heavyweight sportscar; a go-anywhere muscle car. And the new model is much the same, but improved in every department.

The controversial looks of the original have been heavily tweaked, with a more rakish nose and a rear that has significantly more drama. In fact Porsche calls the makeover a complete redesign; still identifiably Cayenne, but with added appeal.

The interior has been worked on too, with a raised centre console inspired by the Porsche Panamera and Carrera GT, it's one of the most special and sporting cabins in its class; especially when fitted with the full leather pack.

There's more space than before, thanks to a wheelbase extended by 40mm, and bootspace is up to 1,780 litres; helped by the sliding rear bench with tilting seat backs.

There are five models in the new Porsche Cayenne range, ranging from a 3.6-litre V6 petrol to the 4.8-litre V8 and 4.8-litre Turbo, a diesel and a hybrid.

The diesel will account for 60 per cent of Cayenne sales. The engine produces 240bhp and 405lb/ft of pulling power, with a 7.8 second 0-62mph and a 135mph maximum; it can average 38.2mpg while emitting 195g/km of CO2. But don't think it's at the sacrifice of drivability; it's a revvy, punchy engine that's superbly refined.

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The diesel we tested on-road is an excellent cruiser, with light but responsive steering and a cosseting ride with good chassis control.

We also tested the 4.8 V8 Cayenne S and twin-turbo Cayenne Turbo. On our blast around Goodwood's motor racing circuit, both models revealed themselves as stunning performance cars with staggering grip levels, exploitable chassis - particularly in the wet - and engaging handling.

So faster, better handling, more spacious and more efficient than the old Cayenne; Porsche can also add more technology to the list too, with the Cayenne S Hybrid.

Equipment levels are good too, with all models featuring Porsche Traction Management system, leather interior, dual-zone climate control, front and rear park sensors, cruise control, 7-inch touch screen audio system, powered front seats and 18-inch alloys.

The range starts at £41,404 for the standard Cayenne, rising to £81,589 for the Turbo, while the diesel is priced at £44,178 and the Hybrid S at £57,609.

Porsche has succeeded in making the best handling SUV even better, while the improved diesel and new hybrid models broaden its appeal further than ever. Sit in one and you'll understand, drive it and you'll be won over.