Diesel Cayenne is a radical – but competent – departure for Porsche
New gearbox and limited-slip differential make the Boxster even better
The ‘drive select system’ improves feel by remapping the throttle’s characteristics
Practical, rapid and more dynamic than its predecessor
A brilliant combination of economy, performance and refinement
More power, faster and more expensive
Merc's first hybrid is great - but only available in left-hand drive
A clear step forward, though many won't notice
We get behind the wheel of the BMW's answer to the new C-Class
Still great to drive, and now easier to use
Upgrades make the four-wheel drive 911 even better to drive
Old underpinnings still up to the job, but the price is high
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