Petrol BMW 2-Series maintenance
BMW 2-Series petrol engines cover several families, including B48 and B38 four-cylinder units as well as six-cylinder performance engines such as N55, B58 and S55. Keep on top of engine oil and filter changes, and follow the correct spark plug replacement interval for your engine, as ignition wear can show up as misfires under load. Cooling system condition also matters, so check coolant level and hoses for leaks, and address any overheating symptoms early. On turbocharged petrol engines, pay attention to boost-related drivability issues and inspect intake and vacuum hoses during routine servicing.