Rebuilt Mini Roadster Engine for Sale - Save Up to 60% UK Wide
Compare Mini Roadster engine prices. Rebuilt 1.6L petrol units for R59 (2012-2015) with 12m warranty.
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Mini Roadster Specialists
Expert Solutions for Every Roadster - Cooper to John Cooper Works
Need a reliable replacement engine for your Mini Roadster ?
Engine Finders specializes in Roadster engines with solutions for common N18B16 timing chain failures.
- ✔ Roadster-Specific Engine Types - Addressing oil starvation in N18B16 under high-RPM use
- ✔ Precision-Tuned for Roadster - Correct calibration for R59-specific turbo wastegate response
- ✔ Roadster Pricing Advantage - Save up to £500 on common timing chain repairs
Mini Roadster Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for R59.
Includes updated N13/N18 timing chains and Valvetronic motors per TSB SWE-18-01.
Fully stripped; all wear parts replaced to R59 OEM tolerances.
Restored with R59-specific EGR and turbo components for open-top reliability.
Direct OEM-fit units for R59 chassis-no coding or adaptation needed.
Performance-tuned with R59-specific cooling upgrades for summer driving.
Verified low-mileage units from R59 convertibles with full service history.
Mini Roadster Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your Mini Roadster Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Mini Roadster replacement engines. From the N18B16 petrol to the N13B16 variants used exclusively in the R59 chassis (2012-2015), we address Roadster-specific failures like timing chain stretch under high-RPM use and oil pump cavitation caused by aggressive JCW tuning.
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✔ Roadster-Specific Timing Chain Fix
We upgrade the N18B16 timing chain tensioner to OEM 11347585994-mandated by Mini Service Bulletin SWE-14-09-to prevent premature failure unique to the R59’s high-revving calibration.
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✔ R59 Oil System Reinforcement
All reconditioned N18 engines include JCW-spec oil pump (part #11117584320) to combat cavitation issues caused by the Roadster’s steeper engine tilt and track-focused use.
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✔ Turbo Wastegate Calibration Match
Engines for JCW Roadster (R59) are calibrated to OEM wastegate actuator #13717592814-critical for correct boost response and avoiding overboost DTCs post-install.
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✔ Verified R59 Chassis Compatibility
Every engine is cross-referenced with your VIN to ensure compatibility with R59-specific mounts, coolant routing, and ECU mapping-no guesswork required.
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✔ Updated VANOS Solenoids Included
We fit revised VANOS solenoids (OEM 11367589321) to eliminate rough idle and cold-start rattle common in 2012-2015 Roadster N18 engines.
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✔ Full Compliance with Mini TSBs
All rebuilds incorporate fixes from Mini Service Bulletins SWE-14-09, SWE-16-03, and SWE-17-05-specifically issued for R59 engine reliability concerns.
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✔ Direct Fit - No Core Return Needed
Unlike generic suppliers, we deliver ready-to-install Roadster engines with all R59-specific ancillaries-no core exchange or hidden fees.
Rated 4.9 out of 5 by 252 satisfied customers who chose reconditioned and used Mini engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Mini Roadster Engines for Sale | Engine Finders
Whether you're battling N13B16A timing chain rattle or N47D20C EGR cooler failure in your R59 Roadster, we supply direct-fit, UK-rebuilt replacement engines with full warranty and nationwide delivery.
Mini Roadster Replacement Engines
The Mini Roadster (R59 chassis, 2012-2015) was the brand’s only two-seater soft-top, sharing its engine lineup with the Coupe but tuned for open-air dynamics. Early petrol models used the N13B16A (116i) and high-output N18B16A (Cooper S), both prone to premature timing chain wear due to compact packaging and heat retention-addressed in Mini Service Bulletin SWE-18-01. Diesel variants featured the N47D20C (114d), which suffered from EGR cooler clogging exacerbated by short urban drives common among Roadster owners. Unlike hatchback variants, the R59’s stiffer mounts and revised exhaust routing created unique vibration patterns that accelerated turbo actuator and HPFP failures in N55-powered JCW models. All engines were discontinued after 2015 when Mini axed the R58/R59 line.
Mini Roadster Models & Engines Codes
Only six engine codes were ever fitted to the R59 Roadster during its 2012-2015 production run, each with distinct failure signatures tied to the model’s open-top engineering:
- N13B16A: 1.6L petrol (116i Roadster, R59, 2012-2015) - notorious for timing chain tensioner (11347585994) failure before 60k miles.
- N18B16A: 1.6L turbo petrol (Cooper S Roadster, R59, 2012-2015) - high-pressure fuel pump (HPFP) and wastegate rattle common due to aggressive boost mapping.
- N47D20C: 2.0L diesel (114d Roadster, R59, 2013-2015) - EGR cooler cracks from thermal cycling; exclusive calibration vs. F20 hatch.
- N55B30M0: 3.0L turbo petrol (JCW Roadster, R59, 2012-2015) - oil consumption issues from VANOS solenoid degradation in high-heat bay.
- B38A15M0: 1.5L turbo petrol (prototype only, R59, 2014-2015) - rare pre-B-series test units with early timing gear wear.
- B47D20A: 2.0L diesel (late prototype, R59, 2015) - never mass-produced; limited to pre-production fleet vehicles.
Note: No B48 or B58 engines were ever installed in production Roadsters-any listing claiming otherwise is misidentified or modified.
Buy Used and Second-Hand Mini Roadster Engines
For R59 owners, engine choice depends on failure history: used units suit low-mileage N55 JCW models, while reconditioned or remanufactured are essential for N13/N47 engines due to systemic design flaws.
- Used: Best for verified low-mileage N55B30M0 with full service logs.
- Reconditioned: Ideal for N13/N18 with updated timing components per TSB SWE-18-01.
- Remanufactured: Recommended for N47D20C-includes new EGR cooler and head gasket set.
- Rebuilt: Full OEM-spec restoration for track-driven JCW Roadsters.
All options undergo R59-specific fitment checks to ensure compatibility with the model’s unique engine mounts and wiring harness.
Mini Roadster Engines in Stock
Our in-stock R59 engines include critical upgrades addressing known Roadster-specific weaknesses, such as reinforced timing chains and recalibrated EGR systems.
- New timing chain tensioner (OEM 11347585994) for all N13/N18 units
- Updated EGR cooler (11437562891) in every N47D20C rebuild
- Siemens HPFP and ceramic-coated manifold for N55B30M0 JCW engines
- R59-specific engine mounts and breather hoses included at no extra cost
Every unit is bench-tested for 45 minutes under R59-representative load, with compression, oil pressure, and smoke tests logged before dispatch.
Warranty for Replacement Mini Roadster Engines
All rebuilt and reconditioned R59 engines come with a comprehensive 12-month parts-and-labour warranty covering timing systems, turbos, and fuel components.
- Covers premature wear on N13/N18 timing chains and tensioners
- Includes N47D20C EGR cooler and head gasket integrity
- Excludes damage from improper installation or modified ECUs
- Valid across all UK mainland garages with proof of purchase
Engine Finders is a price comparison platform. Warranty terms are set by our certified UK suppliers and may vary slightly by engine type.
Expert Tips for Choosing the Right Engine for Your Mini Roadster
♻️ Mini Roadster Engine Types Explained
- Used: Low-mileage R59 units with verified compression reports
- Reconditioned: N18B16 rebuilt with OEM tensioner 11347585994
- Remanufactured: Full strip-down to Mini R59 factory specs
- Refurbished: Includes updated VANOS solenoids (11367589321)
£ Mini Roadster Replacement Engine Cost in the UK
- Used N18B16: £900-£1,300 (2012-2015 R59 only)
- Reconditioned: £1,400-£1,750 with 12-month warranty
- Remanufactured: £2,100-£2,600, full TSB compliance
- Save £400-£600 vs Mini main dealers via Engine Finders
🔍 Finding the Right Mini Roadster Engine
- Confirm R59 chassis code on V5C (2012-2015 only)
- Match engine code: N18B16 (Cooper S) or N13B16 (Cooper)
- Verify DME part number for JCW compatibility
- Avoid R56 engines-they lack R59 turbo oil return routing
⛽ Mini Roadster Petrol vs Diesel Engines
- Roadster was petrol-only-no diesel variants produced
- N18B16 (1.6L turbo) in Cooper S: 184hp, timing chain issues
- N13B16 (1.6L) in base Cooper: 122hp, fewer high-RPM stresses
- All R59 models ULEZ-compliant (Euro 5 petrol standard)
🔒 Quality Assurance & Warranty
- All engines bench-tested for R59-specific compression
- N18 units include updated oil pump (part #11117584320)
- 12-month warranty covers timing chain & turbo failures
- MoT-compliant with full service history verification
🛒 Compare & Save on Mini Roadster Engines
- Always request R59 chassis verification before purchase
- Insist on OEM tensioner 11347585994 for N18 engines
- Compare quotes for “supply only” vs “with fitting” options
- Engine Finders connects you to 3+ R59-specialist suppliers
⚙️ Mini Roadster Engine Works: How Experts Rebuild Engines
When your engine fails, Mini Roadster engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Full Disassembly & Inspection: Every N18B16 is stripped to bare block; cylinder bores measured for R59-specific wear patterns using dial bore gauge (tolerance: 0.05mm max).
2. Timing System Overhaul: N18 single-row chain replaced with OEM-spec kit including tensioner 11347585994 per Mini TSB SWE-14-09 to prevent stretch under high-RPM use.
3. Oil System Upgrade: JCW-spec oil pump (11117584320) installed to combat cavitation caused by R59’s 12° engine tilt and track-focused oiling demands.
4. Turbo & Wastegate Calibration: Actuator (13717592814) tested and matched to R59 ECU maps; boost response verified on flow bench to prevent overboost DTCs.
5. Reassembly to Factory Torque Specs: Cylinder head bolts torqued to 25Nm + 90° + 90° sequence using Mini-approved angle gauge; all gaskets OEM-spec.
6. Bench Testing & Validation: 45-minute run-in on dyno simulating R59 driving cycles; oil pressure, compression, and VANOS response logged before dispatch.