Car windscreen mistake you can make that could cost you £300 and affect your car insurance DRIVERS are being warned about a windscreen mistake they could make that could land them with a hefty repair bill and even increase your car insurance excess by £300. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:BAD news for drivers - Petrol and diesel cars could be BANNED the UK by 2030Simple car insurance trick could save you THOUSANDS off your premium costFord recalls 1.4 MILLION cars over steering wheel fault: Find out if YOUR car is affectedMcLaren Hyper-GT will have 'top speed exceeding 243mph' - even faster than its F1 road carMaking this mistake might cost you your driving licence this St Patrick’s DayNew driving laws coming in 2018 - Will YOU be affected by the rule changes?