MINI Convertible Cooper S Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK MINI Convertible Cooper S engine specialists. Compare prices on reconditioned, rebuilt and used engines to secure the most cost-effective solution for your vehicle.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £3,500 to £4,500
Used from £1,200 · Reconditioned from £2,200 · Common codes: W11B16A, N14B16A, N18B16A, B48A20A
From £1,200
Tested, bare/short engine
From £2,200
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK MINI Convertible Cooper S specialists.
3 Simple Steps3 Simple Stepsto Finding the Best MINI Convertible Cooper S Replacement Engineto Finding the Best MINI Convertible Cooper S Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryMINI Convertible Cooper S - Engine History & Specs at a Glance
When the MINI Convertible Cooper S launched, it delivered iconic open-top performance, evolving from a supercharged 1.6L unit to a highly efficient, turbocharged 2.0L powerhouse.
Variant HistoryMINI Convertible Cooper S - Engine History & Specs at a Glance
When the MINI Convertible Cooper S launched, it delivered iconic open-top performance, evolving from a supercharged 1.6L unit to a highly efficient, turbocharged 2.0L powerhouse.
MINI Convertible Cooper S
Fuel TypePetrol
Engine Size Range1.6L-2.0L
Power Output Range170-192 hp across the variant's historyEngine History Timeline
W11B16A 1.6L Supercharged Petrol, 170 hp (R52 generation launch)
N14B16A 1.6L Turbocharged Petrol, 184 hp (R57 generation, architecture changed from supercharged to turbocharged)
N18B16A 1.6L Turbocharged Petrol, 184 hp (R57 LCI update, revised timing chain architecture and engine management)
B48A20A 2.0L Turbocharged Petrol, 192 hp (F57 generation, increased displacement for improved torque and long-term reliability)
Key Specs Snapshot
Fuel TypePetrolEngine Size Range1.6L-2.0LPower Output Range170-192 hp across the variant's historyYears Produced2004-2023Every engine fitted to the MINI Convertible Cooper S is covered below, with UK rebuilt pricing and known failure points.
MINI Convertible Cooper S Engine Codes - Specifications & Replacement CostMINI Convertible Cooper S Engine Codes - Specifications & Replacement Cost
1.6L Petrol (2004-2008)
Power Output170 hpYears Fitted2004-2008
Compatible Trim Levels
- Cooper S
- Cooper S Checkmate
- Cooper S Sidewalk
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£1,200-£1,600
Reconditioned
Addressed known issues, tested
£2,000-£2,800
Rebuilt
Full teardown, upgraded internals
£2,800-£3,500
Common Failure
Supercharger snout failure, excessive oil consumption, and early timing chain guide wear, typically occurring between 80,000 and 100,000 miles.
The MINI Convertible Cooper S has a well-documented reliability profile, with the N14 and N18 1.6L turbocharged engines dominating replacement demand due to timing chain and fuel system vulnerabilities. Rebuilt engines through EnginesMarket include upgraded components addressing these original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the MINI Convertible Cooper S N14/N18 Wears Prematurely
Affected Vehicles
MINI Convertible Cooper S (N14B16A, N18B16A, 2009-2015)
Typical Failure Mileage
60,000-90,000 miles
Root Cause
The original timing chain tensioner lacks sufficient hydraulic pressure, allowing the chain to stretch and slap against the guide, creating a "death rattle" on cold starts and eventually leading to catastrophic engine failure.
Why It Happens
The original timing chain tensioner lacks sufficient hydraulic pressure, allowing the chain to stretch and slap against the guide, creating a "death rattle" on cold starts and eventually leading to catastrophic engine failure.
Dealer (parts + labour)
£800-£1,200
Specialist (parts + labour)
£600-£900
What it involves
Replacing the chain, tensioner, and guides before catastrophic failure.
Suitability
Good if caught early (no engine knock), extends life by 40k+ miles.
1 - 2 daysDealer (parts + labour)
£4,500-£6,000
Specialist (parts + labour)
£3,200-£4,500
What it involves
Supply & fit of a rebuilt unit with upgraded timing components and a 12-month warranty.
Suitability
The only viable option once the chain has jumped or caused internal damage.
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Preventative Chain Kit Replacement Minor | £800-£1,200 | £600-£900 | Replacing the chain, tensioner, and guides before catastrophic failure. | Good if caught early (no engine knock), extends life by 40k+ miles. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £4,500-£6,000 | £3,200-£4,500 | Supply & fit of a rebuilt unit with upgraded timing components and a 12-month warranty. | The only viable option once the chain has jumped or caused internal damage. | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical R57 MINI Convertible Cooper S (2009-2015) is currently valued between £2,500 and £6,000 depending on condition and mileage [THIRD-PARTY]. An F57 MINI Convertible Cooper S (2016-2023) typically ranges from £7,000 to £15,000+ [THIRD-PARTY]. If your R57 vehicle is worth under £4,000, a full rebuilt engine may approach or exceed the car's value, making a quality used engine or preventative repair the more financially sensible route. For F57 models, a reconditioned or rebuilt engine is strongly justified by the warranty and restored reliability.
Our Recommendation
Our Recommendation
If you hear a rattling noise on startup but the MINI Convertible Cooper S engine still runs smoothly, invest in a preventative timing chain kit replacement immediately. If the engine has already suffered a chain jump or severe oil starvation, a full replacement with a rebuilt unit featuring upgraded components is the only reliable long-term solution.
Don't Let Engine Failure Write Off Your MINI Convertible Cooper S
Whether you are dealing with the notorious N18 timing chain rattle or a B48 cooling system issue, replacing your engine with a rebuilt unit from EnginesMarket ensures the original weak points are addressed with upgraded components. You get a minimum 12-month unlimited-mileage warranty, nationwide delivery, and prices that are significantly lower than main dealer premiums.
Compare rebuilt N18B16A MINI Convertible Cooper S engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific MINI Convertible Cooper S. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
MINI Convertible Cooper S Engine ReplacementFrequently Asked Questions
Question 1How much does a MINI Convertible Cooper S engine replacement cost-
The cost to replace a MINI Convertible Cooper S engine varies by generation and condition. Used engines typically range from £1,200 to £2,200, while reconditioned units cost between £2,000 and £3,500. A fully rebuilt engine with upgraded components and a 12-month warranty generally ranges from £2,800 to £4,500, excluding labour.
- Used engines are the most budget-friendly but carry higher risk.
- Reconditioned engines offer a balance of reliability and cost.
- Rebuilt engines provide the longest lifespan and best warranty coverage.
Question 2What are the signs of timing chain failure in a MINI Convertible Cooper S-
The most common early warning sign is a loud rattling or "death rattle" noise from the engine bay, particularly during a cold start. Other symptoms include the check engine light illuminating, rough idling, loss of power, or metallic ticking sounds that worsen with engine speed.
- Do not ignore a cold-start rattle; it indicates tensioner failure.
- Continuing to drive can cause the chain to jump, leading to catastrophic valve and piston damage.
- Immediate inspection by a MINI specialist is strongly advised.
Question 3Is it worth replacing the engine in a 2009-2015 MINI Convertible Cooper S-
It depends on the vehicle's overall condition and current market value, which typically ranges from £2,500 to £6,000 for this era. If the rest of the car is in excellent condition with low mileage, a reconditioned engine can extend its life reliably.
- Evaluate the car's bodywork, suspension, and service history first.
- A used engine is often the most financially viable option for lower-value examples.
- Always get multiple quotes to ensure you are getting a fair market price.
Question 4How long does a MINI Convertible Cooper S engine replacement take-
A professional supply and fit of a MINI Convertible Cooper S engine typically takes 1 to 3 working days, depending on the specialist's workload and whether any ancillary components (like the clutch or flywheel) also need replacement.
- The engine removal and installation process itself usually takes 6-10 hours.
- Additional time is required for ECU coding, fluid flushing, and road testing.
- EnginesMarket specialists provide clear timelines before you commit to a quote.
Question 5What is the difference between the N18 and B48 engines in the MINI Convertible Cooper S-
The N18 (2010-2015) is a 1.6L turbocharged 4-cylinder engine producing 184 hp, known for its punchy delivery but also its timing chain vulnerabilities. The B48 (2016-2023) is a 2.0L turbocharged 4-cylinder engine producing 192 hp. The B48 features a rear-mounted timing chain, improved thermal management, and significantly better long-term reliability.
- The B48 offers more torque, better fuel efficiency, and lower emissions.
- The N18 requires strict preventative maintenance to avoid catastrophic failure.
- Both engines benefit from upgraded rebuilt components addressing known weaknesses.
Why Choose UsCompare MINI Convertible Cooper SEngine PricesToday
500+ MINI Convertible Cooper S engines supplied through our network
12-Month Warranty on every rebuilt MINI Convertible Cooper S engine
Nationwide UK delivery
supply & fit available
Don't overpay at the main dealer. Comparing quotes through EnginesMarket is 100% free and carries no obligation. We connect you directly with vetted UK specialists who hold the exact reconditioned or rebuilt engine your MINI Convertible Cooper S needs, complete with upgraded components and comprehensive warranty coverage.
Enter your registration
and get matched with verified MINI Convertible Cooper S specialists.