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The Top Gear car review:Vauxhall Cascada
Running costs and reliability
The most economical Cascada - the 165bhp 2.0-litre diesel - does a little over 54mpg, while the petrols manage anything from 44mpg down to late thirties for the 170bhp 1.6 turbo with an auto box. Residuals aren’t likely to be as strong as an A5s, either.