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Built-in sat nav map updates cost up to £164

Built-in sat navs are convenient but updating the maps on some can be expensive, while on others its free. We uncover the costs for our tested models.

Which? tests reveal if built-in sat navs are worth the money

Built-in sat navs are often a tempting optional extra when you're buying a new car. Which? tests reveal whether they're worth paying for.

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