What's in this guide
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Classic Vauxhall challenge
Which? first tested the Mk1 Vauxhall Cavalier in 1977. Three generations later, we find out how it compares with the 2010 Insignia
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The comfort challenge
Thirty years on, how will the design and comfort of the Cavalier stack up against the hi-tech Insignia?
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Cavalier vs Insignia on the road
The Insignia is light years ahead of the Cavalier in performance and safety, but which is more enjoyable to drive?
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Age before beauty?
We compare the costs of the two Vauxhalls and reveal which one steals our hearts



