For obvious reasons, the cheapest cars to run in the UK tend to be diminutive, lightweight city cars but the Dacia Sandero is a fully-fledged supermini and a diesel one at that. It’s the petrol powered Sandero Access that usually gets most of the attention, being the cheapest new car in the UK but the Ambiance diesel is cheaper to run overall thanks to lower depreciation and fuel costs.
Total cost of ownership (3-years, 36,000 miles): £8,707.71
Monthly running costs: £241.88
Cost per mile: 24p