Mini Convertible Engine ReplacementCompare Prices & Save

Key points

• • Rebuilt N14 engines cost £1,500-£3,500 supply only for R57 Cooper S models
• • B47 diesel replacements range £1,800-£4,000 depending on AdBlue system compatibility
• • Used engines from £450-£1,150 offer budget solutions with verified mileage history
• • Supply and fit services add £450-£850 to engine price across UK specialists
• • All EngineMarket quotes include minimum 12-month unlimited mileage warranty coverage

Key points

• • N14 timing chain "death rattle" indicates imminent tensioner failure requiring urgent attention
• • Rebuilt units feature reinforced guides and hydraulic tensioners resolving the original design flaw
• • Carbon build-up on intake valves requires periodic walnut blasting for optimal N14 performance
• • Early detection of rattling noise can prevent catastrophic valve damage and costly repairs

Key points

• • B47 diesel engines relocated timing chains to the front, solving N47 rear-chain lubrication issues
• • B48 petrol units feature improved thermal management reducing overheating and head gasket risks
• • W10 naturally aspirated engines avoid turbo and direct injection complexity for lower maintenance costs
• • N18 revised turbo petrol offers better reliability than N14 but still requires VANOS maintenance

Key points

• • Engine codes are stamped on the block near the oil filter housing or timing cover
• • DVLA online vehicle enquiry confirms engine size and fuel type using your registration number
• • Specialist suppliers require exact engine codes to ensure bolt-pattern and ECU compatibility
• • R57 models use N-series codes while F57 models feature B-series engine architecture

Key points

• • Used engines cost £450-£1,150 but carry higher risk without comprehensive warranty coverage
• • Reconditioned units replace gaskets, seals and timing components for balanced reliability and value
• • Rebuilt engines include new rotating assemblies and machining for near-factory specification performance
• • All EngineMarket options include minimum 12-month unlimited mileage warranty for peace of mind

Key points

• • B47 diesel and B48 petrol F57 engines commonly exceed 150,000 miles with documented service history
• • N14 and N18 turbo petrol engines require timing chain monitoring from 60,000 miles onwards
• • Using BMW Longlife-01 or LL-04 spec oil prevents premature wear in Mini Convertible engines
• • Neglecting coolant changes accelerates thermostat housing and water pump failures across all generations

Key points

• • R57 Cooper S models retain strong residual values justifying engine replacement investment
• • Supply and fit services from £450-£850 make specialist replacement more affordable than dealers
• • Rebuilt engines with upgraded components often outperform original factory specification reliability
• • Scrapping typically returns £200-£500 versus £2,000-£4,000+ value after engine replacement

Key points

• • N16 and N18 engines benefit from revised piston rings reducing oil burn in rebuilt units
• • PCV valve failure accelerates oil consumption and should be checked during diagnostic assessment
• • Using correct BMW-spec oil viscosity prevents accelerated wear in high-mileage Mini Convertible engines
• • Rebuilt engines include upgraded PCV systems and ring sets resolving original consumption issues

Key points

• • Supply and fit pricing includes engine removal, installation and initial calibration by certified technicians
• • Nationwide network covers all UK postcodes with typical turnaround of 2-4 working days
• • Specialists perform post-fitment diagnostics ensuring ECU communication and fault code clearance
• • Mobile fitting options available in select areas reducing transport costs for immobile vehicles

Key points

• • 12-month unlimited mileage warranty applies to all reconditioned, rebuilt and remanufactured engine options
• • Warranty covers internal mechanical components, gaskets and seals against manufacturing defects
• • Labour costs for warranty claims are covered when fitted by EngineMarket approved specialists
• • Extended warranty options available for rebuilt units providing up to 24-month comprehensive coverage