Fuel mistake can land you hefty bill and invalidate your car insurance - how to avoid it HUNDREDS of thousands of motorists across Britain are making an error when feeling up their car which would lead to very costly repairs. Here’s how to avoid it. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Third party not the cheapest insurance optionClocks going back to herald increase in crashesFord Edge Titanium: A world away from Ford’s bestPeugeot 3008 review: Is it the most underrated crossover on the market?CAR INSURANCE RIP OFF: Motorists face paying £82 MORE compared to last yearFines for drivers using mobile phones behind the wheel 'have plummeted'