MINI R50 / R53 Engine
W10 & W11 Supercharged

About This Engine

The W10 and W11 engines are the first-generation MINI powertrains, developed through the BMW/Chrysler partnership (the Tritec engine family). The W10 is a naturally aspirated 1.6L four-cylinder producing 90bhp in the base Cooper One, 116bhp in the Cooper. The W11 adds the Eaton M45 Roots-type supercharger, taking output to 163bhp in the standard Cooper S and up to 210bhp in the JCW specification.

The W11 supercharger is belt-driven from the crankshaft and spins at approximately 2.4× engine speed — this gives the W11 its characteristic instant throttle response and linear power delivery without turbo lag. The supercharger requires correct belt tension and condition; we verify the supercharger belt and idler pulleys on all W11 units.

Common issues on the W10/W11 family include timing chain wear (particularly on higher-mileage units) and VANOS variable valve timing solenoid faults on the later W10. Each engine undergoes compression testing across all four cylinders, oil pressure check, and visual inspection for external leaks before listing.

What's Included

• Engine block and head assembly
• Eaton M45 supercharger (W11)
• Supercharger drive belt and tensioner (W11)
• Intake manifold and throttle body
• Oil filter housing
• Wiring harness (engine loom)

Vehicle Compatibility

Why Buy From Mini Spare Lebanon

• Compression test across all four cylinders — results disclosed
• Oil pressure verified at idle and operating RPM
• Supercharger belt condition confirmed on W11 units
• VANOS solenoid function tested
• W10 and W11 clearly differentiated — correct spec shipped
• WhatsApp your chassis number for exact specification confirmation