Roadster Petrol Engines
from £1,200 to £3,200
Rebuilt units from £1,450 · Common codes: N18B16A, N13B16A, N18B16
Mini ENGINE MARKETPLACE
Mini Roadster Engine Replacement - Compare Quotes from UK Specialists
Get quotes from trusted UK Mini Roadster engine specialists. Compare reconditioned and rebuilt prices for N12, N16, and N18 - 1.6L petrol covered. Get specialist quotes for your Roadster.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Roadster Diesel Engines
from £1,400 to £3,800
Rebuilt units from £1,550 · Common codes: N47D20C, N47D20, B47D20
Roadster John Cooper Works Engines
from £2,800 to £7,500
Rebuilt units from £3,200 · Common codes: N18B16A, N55B30M0, N18B16
Instant engine replacement quote - 100% free, no obligation
Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Mini Roadster Replacement Engineto Finding the Best Mini Roadster Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for Mini Roadster Engine Replacement
Compare affordable rebuilt Mini Roadster engine costs by variant - see failure causes, codes, fuel types & sizes to find best value UK replacement options.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Mini Roadster Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Mini Roadster engines through EngineMarket.
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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Variants We Cover
Mini Roadster Engine ReplacementAll Variants Covered
Mini Roadster Cooper
N13B16A 1.6L Petrol
Rebuilt Engines: £1,200-£2,600
Mini Roadster Cooper S
N18B16A 1.6L Petrol
Rebuilt Engines: £1,400-£3,200
Mini Roadster John Cooper Works
N18B16A/N55B30M0 1.6L- 3.0L Petrol
Rebuilt Engines: £2,800-£8,500
Mini Roadster SD
N47D20C 2.0L Diesel
Rebuilt Engines: £1,500-£3,600
Not sure which variant your Mini Roadster is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Roadster
Engine Codes
Mini Roadster Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mini Roadster across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Petrol Engines
Extracted from detailed petrol and performance engine families across Mini Roadster variants.
N18B16A - 1.6L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Cooper SCooper S HighgateJohn Cooper Works
Avg. rebuilt price
£1,400 - £3,200
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 1.6L
- Power output
- 184-218 hp
- Years fitted
- 2012-2015
Common failures
- ●Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Mini Roadster engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
Roadster
Common Problems
Mini Roadster Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Mini Roadster R59 relies on three core engine families: the N18/N13 Prince petrol units and the N47 BMW diesel. While spirited to drive, these compact powerplants suffer from well-documented weaknesses around timing drive components, oil control, and high-pressure fuel delivery. Every rebuilt Mini Roadster engine supplied through our network features...
Mini Roadster Timing Chain Failure - Why N18 Turbo Engines Suffer Premature Drive Train Damage
Mini Roadster Timing Chain Failure
Most affected vehicles
Mini Roadster Cooper S & John Cooper Works (R592012-2015
Mini Roadster Cooper S & John Cooper Works (R59, 2012-2015, N18B16A)
Failure mileage range
50,000 - 85,000 miles
Typical failure window
Root cause
The early Prince N18 design uses a rear-mounted timing chain with an inadequately tensioned plastic guide and weak hydraulic tensioner. Under repeated heat cycles, the tensioner loses pressure, allowing the chain to slack and strike the guide.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Chain Kit Replacement | £950 - £1,400 | £550 - £850 | Tensioner (OEM 11347585994), guides, chain, and gaskets replaced before catastrophic slack occurs. | 100,000+ miles. Only viable before rattle or oil starvation begins. |
| Full Replacement - Rebuilt N18 Engine | £4,200 - £5,800 | £1,900 - £3,100 | Supply & fit of a bench-tested rebuilt unit with upgraded tensioner, reinforced oil pump, and fresh seals. | Lifetime of vehicle. Includes 12-month warranty and resolves all chain-related weak points. |
Our recommendation
If your Mini Roadster Cooper S or JCW is under 60k miles and running quietly, investing in a preventative chain kit is the most cost-effective route. Once you hear a metallic rattle at cold start or spot metal shavings in the sump, the oil pump has likely been starved by chain debris. At that stage, a minor fix will not restore safety, and a full rebuilt N18 with upgraded internals is the only reliable solution.
Compare rebuilt N18B16A Mini Roadster engine pricesReplacement Engine Options
Mini Roadster Engine TypesOptions, Costs & What to Expect
Every engine type is available through our UK specialist network, with typical price ranges tailored to your exact Mini Roadster variant, engine code and budget.
Mini Roadster Reconditioned Engines (Recon)£1,500 - £2,900((supply only))
Mini Roadster Rebuilt Engines£1,700 - £3,200((supply only))
Mini Roadster Used Engines£900 - £1,600((supply only))
Mini Roadster Remanufactured Engines£2,300 - £3,900((supply only))
Mini Roadster Refurbished Engines£1,300 - £2,500((supply only))
Compare Mini Roadster engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Mini Roadster within hours.
Engine Sizes
Mini Roadster Engines by SizeFind the Right Displacement for Your Variant
Every engine displacement fitted to the Mini Roadster across its UK production run is listed below, with compatible engine codes, variant applications and common failure notes to help you identify the correct replacement.
The 2.0L diesel was the sole oil-burning option for the Mini Roadster, fitted exclusively to the SD variant across the R59 production run. This BMW-sourced N47 unit delivered strong low-end torque suited to the Roadster's sporty character, though it requires vigilant maintenance of its EGR and timing drive components to ensure longevity.
⚙
Engine Code(s)
N47D20C
▣
Compatible Models (UK)
SD, SD Highgate
ϟ
Power output
Verified by registration
△
Common Failure Points
EGR cooler failure, timing chain tensioner wear at higher mileage
Production Years: R59, 2012-2015
Get quotes for Mini Roadster 2.0L diesel enginesFuel Type
Mini Roadster Engines by Fuel Type
Choose your Mini Roadster engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the efficient 2.0L SD diesel to the spirited 1.6L Cooper S turbo petrol.
Mini Roadster Diesel Engines
DieselThe sole diesel option for the R59 Roadster, the 2.0L N47 unit powered the SD variant across the model's 2012-2015 production run, delivering strong torque but requiring vigilant maintenance of its EGR and timing drive systems.
Common Mini Roadster Diesel Engine Families
- •N47D20C - SD variant 2.0L diesel, timing chain tensioner vulnerability
- •N47D20 - Earlier N47 code, shared Roadster failure patterns
Found In
- •R59 Roadster SD (2012-2015) - N47D20C
Known For
- •Strong low-end torque suited to convertible cruising
- •EGR cooler failure causing coolant loss around 70-100k miles
- •Timing chain stretch and tensioner wear between 80-120k miles
Typical Diesel Models
- •SD
- •SD Highgate
1 of 2
Mini Roadster Diesel Engines
DieselThe sole diesel option for the R59 Roadster, the 2.0L N47 unit powered the SD variant across the model's 2012-2015 production run, delivering strong torque but requiring vigilant maintenance of its EGR and timing drive systems.
Common Mini Roadster Diesel Engine Families
- •N47D20C - SD variant 2.0L diesel, timing chain tensioner vulnerability
- •N47D20 - Earlier N47 code, shared Roadster failure patterns
Found In
- •R59 Roadster SD (2012-2015) - N47D20C
Known For
- •Strong low-end torque suited to convertible cruising
- •EGR cooler failure causing coolant loss around 70-100k miles
- •Timing chain stretch and tensioner wear between 80-120k miles
Typical Diesel Models
- •SD
- •SD Highgate
Mini Roadster Petrol Engines
PetrolPetrol power defined the Roadster experience, with the naturally aspirated N13 in base Cooper models and the turbocharged N18 Prince engine in Cooper S and John Cooper Works variants delivering the playful dynamics owners expect.
Common Mini Roadster Petrol Engine Families
- •N18B16A - Turbo Cooper S/JCW engine, timing chain and HPFP failure prone
- •N13B16A - Base Cooper 1.6L, valve stem seal oil consumption common
- •N55B30M0 - Rare JCW 3.0L straight-six, specialist rebuild requirements
Found In
- •R59 Roadster Cooper (2012-2015) - N13B16A
- •R59 Roadster Cooper S (2012-2015) - N18B16A
- •R59 Roadster John Cooper Works (2012-2015) - N18B16A/N55B30M0
Known For
- •Engaging turbo response and signature Mini go-kart handling
- •N18 timing chain tensioner failure between 50-85k miles driving replacement demand
- •Valve stem seal oil consumption on high-mileage N13/N18 units
Typical Petrol Models
- •Cooper
- •Cooper S
- •Cooper S Highgate
Not sure which fuel type your Mini Roadster has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Mini Roadster specialists.
Engine YearsGet quotes for 2012 Mini Roadster replacement engines →
Mini Roadster Engines by YearWhat Was Fitted & WhenMini Roadster Engines by Year - What Was Fitted & When
The section covers all major engine changes across the R59’s 2012-2015 production run, organised so owners can quickly identify their model year and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓Launch of the R59 Roadster body style on the BMW Prince platform
- ✓Introduction of N18B16A turbo engine for Cooper S and John Cooper Works
- ✓Diesel variant SD launched with 2.0L N47D20C engine
- ✓Base Cooper fitted with naturally aspirated N13B16A
▣Main Engines
N13B16A- 1.6L petrol (Cooper)
N18B16A- 1.6L turbo petrol (Cooper S, John Cooper Works)
N47D20C- 2.0L diesel (SD)
▰Popular Models
- •Mini Cooper Roadster
- •Mini Cooper S Roadster
- •Mini John Cooper Works Roadster
- •Mini SD Roadster
🔧Known For
- ✓First year of production with highest initial timing chain tensioner failure rates
- ✓R59-specific chassis mounts and revised turbo oil return routing differ from R56 hatchbacks
- ✓Strong enthusiast demand but early N18 HPFP and wastegate rattle complaints emerge
- ✓Generic R56 engines frequently noted as incompatible without significant modification
Engine Codes Covered:
N13B16AN18B16AN47D20CNot sure which year your Mini Roadster was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Mini Roadster specialists.
FAQ