Engines Market

MINI Convertible Cooper S SPECIALISTS

MINI Convertible Cooper S Engine Replacement Compare 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
MINI Convertible Cooper S Engine
from£3,500 to £4,500
  • Usedfrom £1,200
  • Reconditionedfrom £2,200
  • Common codesW11B16A, N14B16A, N18B16A

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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 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
  1. 2004

    W11B16A, 1.6L Supercharged Petrol, 170 hp (R52 generation launch)

  2. 2009

    N14B16A, 1.6L Turbocharged Petrol, 184 hp (R57 generation, architecture changed from supercharged to turbocharged)

  3. 2010

    N18B16A, 1.6L Turbocharged Petrol, 184 hp (R57 LCI update, revised timing chain architecture and engine management)

  4. 2016

    B48A20A, 2.0L Turbocharged Petrol, 192 hp (F57 generation, increased displacement for improved torque and long-term reliability)

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

Engine Codes & Pricing

MINI Convertible Cooper S Engine Codes Specifications & Replacement Cost

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

W11B16A — 1.6L Petrol (2004-2008) engine

W11B16A — 1.6L Petrol (2004-2008)

Power Output
170 hp
Years Fitted
2004-2008

Can’t find your exact engine code?-> Get quotes for W11B16A MINI Convertible Cooper S engine replacement

-> Get quotes for W11B16A MINI Convertible Cooper S engine replacement

Common Problems

MINI Convertible Cooper S Engine Problems Repair Cost vs Replacement

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.

Common failure points and repair options

Timing Chain Tensioner Failure

Affected
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.

Repair options

Repair tierDealer priceSpecialist price
Preventative Chain Kit Replacement£800-£1,200£600-£900
Full Replacement - rebuilt/reconditioned engine£4,500-£6,000£3,200-£4,500
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.
-> Compare rebuilt N18B16A MINI Convertible Cooper S engine prices

Cooling System Leaks & Thermostat Housing Failure

Affected
MINI Convertible Cooper S (B48A20A, 2016-2023)
Typical failure mileage
60,000-90,000 miles
Root cause
The plastic composite thermostat housing and water pump assemblies are prone to cracking under repeated heat cycles, leading to slow coolant loss, overheating warnings, and potential head gasket failure if ignored.

Repair options

Repair tierDealer priceSpecialist price
Cooling System Overhaul£500-£800£350-£600
Full Replacement - rebuilt/reconditioned engine£4,500-£6,000£3,500-£4,500
Our recommendation
Regular coolant flushes and immediate attention to minor leaks can prevent catastrophic overheating. If the MINI Convertible Cooper S engine has already warped the cylinder head due to overheating, a full replacement with a rebuilt unit is the most cost-effective and reliable path forward.
-> Compare rebuilt B48A20A MINI Convertible Cooper S engine prices

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.

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FAQ

MINI Convertible Cooper S Engine ReplacementFrequently Asked Questions

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

Why Choose Us

Compare MINI Convertible Cooper S Engine Prices Today

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.

500+500+ MINI Convertible Cooper S engines supplied through our network
12-Month12-Month Warranty on every rebuilt MINI Convertible Cooper S engine
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