2020 BMW 330D M Sport + Edition Auto 3.0L Diesel · 99 GV

The BMW 330d returns approximately 45-50 mpg on a motorway cruise and around 35-40 mpg in mixed driving, though real-world figures depend heavily on driving style. Fuel costs for around 10,000-12,000 miles per year at current diesel prices would typically fall in the £1,800-£2,400 bracket. Road tax sits in a higher bracket for diesel vehicles first registered between 2020 and 2025, with annual VED rates in the £150-£600 range depending on list price and current regulations. Insurance for a 330d M Sport Plus typically falls in group 35-40, meaning premiums of £800-£1,200 per year for experienced drivers. Annual maintenance including a major service can range from £400-£700 depending on whether you use a BMW main dealer or a quality independent specialist.

Although the MOT record is clean, a physical inspection should focus on areas the test doesn't fully cover. Start with the engine bay: check for oil leaks around the sump and valve cover gasket, both common on the B57 diesel at this age. Inspect the exhaust system including the AdBlue injector and DPF, as repairs can run into four figures. Underneath the vehicle, examine the rear subframe mounting points for corrosion — a known issue on 3 Series models, though less prevalent than on earlier generations. Test the iDrive controller and check for any warning lights, as infotainment repairs can be costly.

Inside the cabin, check the leather seats (particularly the bolster wear on the driver's seat) and verify all electric seat adjustments work correctly. The M Sport Plus Edition typically includes Harman Kardon audio, which is worth confirming functions properly. On the test drive, listen for any clonks from the suspension over speed bumps, as control arm bush wear is common. Verify the automatic gearbox changes smoothly through all gears and that the diesel particulate filter has not triggered any warning lights. Finally, check the bodywork carefully for parking dents and stone chips, particularly on the bonnet and front bumper, as M Sport Plus body panels are expensive to respray or replace.