With only one owner and low mileage for its age at 24924 miles, this 2021 BMW 4 Series 420i M Sport is a great find. This vehicle boasts a 2.0L petrol engine and meets Euro 6 emission standards. The M Sport trim adds a touch of sporty sophistication to this sleek model. This BMW 4 Series stands out with its fuel economy of 44 mpg, meaning fewer trips to the petrol station and more money in your pocket compared to similar vehicles. The low CO2 emissions mean you'll be contributing less to environmental pollution than with other cars in its class. The car also benefits from a low insurance group, which can save you money on your annual premiums. You'll also find a surprisingly large boot space, offering practicality that rivals similar vehicles.