When you’re hunting for an affordable Mazda 3 engine for sale in the UK, one question pops up: how long will a reconditioned Mazda 3 engine last? A well-rebuilt engine can keep your car running for 80,000 to 150,000 miles, but this depends on how you drive, how well you maintain it, and the quality of the rebuild itself. Regular oil changes and careful driving can make a huge difference, giving you years of smooth performance from your replacement Mazda 3 engine.