I've owned this car for the last 5 years and it has been nothing but perfect, mileage is coming up to 116k but don't let the mileage fool you as it's always been looked after by myself a trained BMW technician. The engine is the N55 but as it's the later built N55 BMW fit it with certain S55 internals unlike the earlier models which aren't as strong and prone to damage. Servicing with only BMW parts, Oil changed roughly every 10k miles or before, gearbox oil change at 70k miles. Recently had an MOT in December and passed with 0 advisory's. Recently also replaced the front brake reaction arms as they're common to fail It's running 420bhp with an MHD stage 2+ map, XHP stage 3 gearbox map it's also been bimmer coded with lots of little handy features which helped day to day driving. Also the I-Drive has been updated to later software to handle BMW CarPlay which also works flawlessly. Full list of mods in the photos! Happy to answer any questions