MINI COOPER SPECIALISTS

Mini Convertible Cooper Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Mini Convertible Cooper engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most reliable and cost-effective solution for your vehicle.

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12-Month Warranty

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Mini Convertible Cooper Engine

from£1,500 to £3,200...

Usedfrom £600
Reconditionedfrom £900
Common codesW10B16A, N12B16A, N16B16A

Mini convertible Cooper Used Engine — W10B16A

Mini convertibleUsed Engine — W10B16A

Mini convertible Cooper Reconditioned Engine — W10B16A

Mini convertibleReconditioned Engine — W10B16A

Mini convertible Cooper Rebuilt Engine — W10B16A

Mini convertibleRebuilt Engine — W10B16A

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Mini Convertible Cooper Engine History & Specs at a Glance

When the Mini Convertible Cooper launched, it brought iconic go-kart handling to the open-top range. Over its lifecycle, the variant transitioned from the Chrysler-sourced W10 naturally aspirated engine to BMW's N12/N16 Valvetronic units, and finally to the modern, efficient B38 turbocharged three-cylinder architecture.

2003
W10B16A, 1.6L, 120hp (R52 generation launch)
2009
N12B16A, 1.6L, 120-122hp (R57 generation launch, introduction of Valvetronic technology)
2011
N16B16A, 1.6L, 122hp (R57 LCI facelift, featuring revised piston rings and improved PCV system)
2016
B38A15A, 1.5L Turbo, 136hp (F57 generation launch, shift to modular turbocharged architecture)

Every engine fitted to the Mini Convertible Cooper is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Mini Convertible Cooper Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

W10B16A — 1.6L Petrol (2003-2008)

Power Output: 120hp
Years Fitted: 2003-2008

Can’t find your exact engine code?-> Get quotes for W10B16A Mini Convertible Cooper engine replacement

-> Get quotes for W10B16A Mini Convertible Cooper engine replacement

Common Problems

Mini Convertible Cooper Engine Problems Repair Cost vs Replacement

The Mini Convertible Cooper is generally reliable, but its naturally aspirated and modern turbocharged engines have specific, well-documented wear points. Valvetronic motor failures on N12/N16 engines and timing chain guide wear on the modern B38A15A account for the majority of Mini Convertible Cooper replacement requests. Rebuilt engines through EnginesMarket include upgraded components addressing these original failure points, plus a minimum 12-month unlimited-mileage warranty.

Common failure points and repair options

Valvetronic Motor & Oil Consumption

Affected: Mini Convertible Cooper (N12B16A, N16B16A, 2007-2015)
Typical failure mileage: 70,000-100,000 miles

Root cause

The Valvetronic eccentric shaft sensor and motor can fail under heat cycling, while worn piston rings and PCV valves lead to excessive oil consumption, carbon buildup, and potential catalytic converter damage.

Repair options

Repair tier	Dealer price	Specialist price
Minor - PCV & Valvetronic Motor Replace	£600-£900	£400-£700
Full Replacement - rebuilt/reconditioned engine	£2,000-£2,600	£1,100-£2,600

Our recommendation

If oil consumption is mild, replace the PCV valve immediately and monitor levels. However, if the Valvetronic motor has failed or oil burning is severe, a rebuilt N16B16A engine with updated rings and PCV components offers the best long-term value and prevents repeat failures.

-> Compare rebuilt N16B16A Mini Convertible Cooper engine prices

Timing Chain Guide Wear & Injector Coking

Affected: Mini Convertible Cooper (B38A15A, 2016-2024)
Typical failure mileage: 70,000-110,000 miles

Root cause

The B38's timing chain guides can wear prematurely, causing a cold-start rattle. Additionally, direct injection promotes severe carbon buildup on intake valves, restricting airflow and increasing combustion temperatures.

Repair options

Repair tier	Dealer price	Specialist price
Minor - Walnut Blast & Chain Kit	£1,200-£1,600	£800-£1,200
Full Replacement - rebuilt/reconditioned engine	£3,500-£4,500	£1,500-£3,200

Our recommendation

Address any timing chain rattle immediately with a preventative chain kit replacement. If the chain has already jumped time or the engine has suffered overheating, a rebuilt B38A15A engine with upgraded guides and cleaned intake ports is the only reliable long-term solution.

-> Compare rebuilt B38A15A Mini Convertible Cooper engine prices

Don't Let Engine Failure Write Off Your Mini Convertible Cooper

The Mini Convertible Cooper's iconic driving experience shouldn't end because of a single factory design weakness. Whether you are dealing with Valvetronic faults, oil consumption, or timing chain rattle, EnginesMarket connects you directly with verified UK Mini Convertible Cooper specialists who understand these exact failure patterns. Every rebuilt unit we facilitate is upgraded with reinforced internal components to permanently address the root cause, bench-tested for performance, and delivered with a minimum 12-month unlimited mileage warranty.

Compare Mini Convertible Cooper Engine Replacement Prices Now ->

FAQ

Mini Convertible Cooper Engine ReplacementFrequently Asked Questions

Everything Mini Convertible Cooper owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

Mini Convertible Cooper engine replacement costs typically range from £900 to £3,200 for a rebuilt unit, depending on the generation and engine code. Rebuilt units offer the best balance of reliability and value for most UK owners.

W10B16A and N16B16A rebuilds average £900-£2,600 supply only.
B38A15A replacements range £1,500-£3,200 typical rebuilt cost.
Supply and fit labour adds £450-£950 depending on location.
12-month unlimited mileage warranty included with all EnginesMarket network suppliers.

-> Compare Mini Convertible Cooper engine replacement prices from UK specialists now.

Mini Convertible Cooper Valvetronic failure often presents as a rough idle, loss of power, or a check engine light indicating eccentric shaft sensor faults.

You may also notice excessive oil consumption and blue smoke from the exhaust.
Ignoring these signs can lead to carbon buildup fouling the catalytic converter.
If the Valvetronic motor fails completely, the engine may enter limp mode or refuse to start.

-> Get quotes for rebuilt N12/N16 Mini Convertible Cooper engines with upgraded components.

It depends on the vehicle's overall condition and current market value. An R57 Mini Convertible Cooper is typically valued between £3,000 and £6,000.

If the rest of the car is in excellent condition, a used or reconditioned engine can extend its life cost-effectively.
If the vehicle has multiple other faults, the replacement cost may exceed the car's total value.
Always evaluate the full vehicle condition and part-exchange value before committing to a rebuild.

-> Check used Mini Convertible Cooper engine prices for your exact reg.

A professional supply and fit service for a Mini Convertible Cooper typically takes 2 to 4 working days from the time the engine arrives at the specialist workshop.

This includes removing the old unit, fitting the replacement, and updating the ECU mapping.
Nationwide delivery of the engine can add 1-2 days to the overall timeline.
Specialists perform post-fitment diagnostics ensuring seamless ECU communication and fault clearance.

-> Book your Mini Convertible Cooper engine supply and fit today.

The R57 (2009-2015) uses the 1.6L N12B16A or N16B16A naturally aspirated engine producing 120-122hp, relying on Valvetronic technology. The F57 (2016-2024) uses the 1.5L B38A15A turbocharged three-cylinder engine producing 136hp.

The B38A15A offers better fuel efficiency and lower emissions, ensuring ULEZ compliance.
The N16B16A is simpler but prone to oil consumption and Valvetronic motor wear.
Replacement parts and rebuilt units are specific to each generation's engine code and are not interchangeable.

-> Get quotes for your exact Mini Convertible Cooper engine code.

Yes, both the older N16B16A and the modern B38A15A Mini Convertible Cooper engines meet the required Euro emissions standards for ULEZ compliance.

The B38A15A is fully Euro 6 compliant and exempt from London clean air zone charges.
The N16B16A meets Euro 5 standards, which is also currently ULEZ compliant for petrol vehicles.
All rebuilt engines supplied through EnginesMarket retain original emissions hardware ensuring MoT compliance.

-> Get quotes for ULEZ-compliant Mini Convertible Cooper replacement engines.

Why Choose Us

Compare Mini Convertible Cooper Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is tailored specifically to your exact Mini Convertible Cooper variant and engine code, connecting you directly with vetted UK specialists who hold the right unit.

500+500+ Mini Convertible Cooper engines supplied through our network

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