What a High-Mileage Engine Rebuild Involves
An engine that has covered many miles accumulates wear across its internal components. A high-mileage rebuild is a comprehensive process that addresses this wear through:
- Full strip-down inspection — every component is measured against manufacturer tolerances.
- Precision machining — cylinder boring and honing, crankshaft grinding, and cylinder head resurfacing.
- Replacement of all wear items — pistons, rings, bearings, timing components, seals, oil pump, and water pump.
- Thorough cleaning — oil galleries and cooling passages are cleared of contamination.
- Quality assurance — pressure testing and final assembly to exacting standards.
Every rebuild is carried out in our fully equipped workshop, using genuine or OEM-grade parts and adhering to BS AU257:2002 for remanufactured engines.
Starting Price
High-mileage engine rebuilds start from £1,900
* Depending on engine type, required machining, and parts. A final price is confirmed after our initial inspection.
View pricing disclaimerOur High-Mileage Rebuild Process in Pictures
Our workshop in Billericay, Essex — where every high-mileage rebuild takes place.
Full strip-down inspection: measuring cylinder bore ovality and taper.
Crankshaft grinding and micro-finishing to restore journal surfaces.
Cylinder boring and honing to correct bore wear and restore geometry.
Cylinder head resurfacing to eliminate warpage and ensure a perfect seal.
All wear items replaced — pistons, rings, bearings, timing components, seals and pumps.
Precision assembly using calibrated torque tools and manufacturer specifications.
Final pressure testing and running-in on our test bench before road test.
Applicable Models & Engines
Our high-mileage rebuild service covers the full Land Rover range. Below are the most common engine families we work on at high mileage.
| Model | Engine Family | Typical High-Mileage Considerations |
|---|---|---|
| Defender | Td5, 300Tdi, 200Tdi | Cooling system neglect, cylinder head cracking, injector wear |
| Discovery | TDV6/SDV6, AJ200D, AJ300D | Timing chain wear, crankshaft bearing wear, injector seal leaks |
| Range Rover | TDV6/SDV6, AJ133, AJ300D | Timing chain tensioner wear, cylinder head warpage, supercharger bearing wear (AJ133) |
| Range Rover Sport | SDV6, AJ133 (SVR) | Cooling system leaks, timing chain stretch, oil contamination |
| Discovery Sport | AJ200D, Ford Duratorq | Oil dilution, EGR cooler leaks, injector wear |
| Range Rover Evoque | AJ200D, Ford EcoBoost | Timing chain wear, cooling system issues, oil system contamination |
For a specific vehicle, we always confirm exact engine compatibility during inspection. Learn more about our engine matching process.
Our High-Mileage Rebuild Process
Initial Inspection
We strip the engine and measure all components against manufacturer tolerances to determine the extent of wear.
Machining
Cylinder boring, crankshaft grinding, head resurfacing—all carried out in-house using precision equipment.
Parts Replacement
All wear items (pistons, rings, bearings, timing components, pumps, seals) are replaced with genuine or OEM-grade parts.
Assembly & Testing
Engine is assembled to exacting standards, pressure-tested, and run-in on our test bench before road testing.
Why Choose Us for Your High-Mileage Rebuild
- Established 2009 — Over 15 years of Land Rover engine rebuild experience.
- Fully equipped workshop — In-house machining, crankshaft grinding, and pressure testing.
- 12-month unlimited-mileage warranty on all rebuilds.
- Nationwide recovery — we can collect your vehicle from anywhere in the UK.
- Transparent pricing — fixed-price quotes after inspection, with no hidden costs.
- Genuine & OEM parts — we never compromise on quality.
Learn more about our workshop and how we ensure every rebuild meets the highest standards.
Recent High-Mileage Rebuilds
Real examples of Land Rover engines we've rebuilt for customers across the UK.
Defender Td5 rebuild after 150,000 miles — full strip-down, new pistons, rings, bearings, and timing chain.
Discovery 4 SDV6 rebuild at 120,000 miles — crankshaft grinding, new bearings, and cylinder head resurfacing.
Range Rover Sport SVR AJ133 rebuild at 100,000 miles — new timing chains, valve seals, and supercharger bearings.
How It Works
Contact Us
Call, WhatsApp, or email us with your vehicle details and the nature of the issue.
Book Inspection
We arrange a convenient time to collect your vehicle or you can drop it off at our workshop.
Strip-Down & Quote
We strip the engine, measure all components, and provide a fixed-price rebuild quote.
Rebuild & Return
We carry out the rebuild, test the engine, and return your vehicle ready to drive.
Frequently Asked Questions
What is considered "high mileage" for a Land Rover engine?
We consider an engine to be high-mileage when it has accumulated significant wear, typically beyond 100,000 miles. However, the need for a rebuild depends on the engine's condition, service history, and how it has been driven. We assess each engine individually during our inspection.
Will a high-mileage rebuild restore my engine to "as new" condition?
Our rebuild process replaces all wear items and machines components to manufacturer tolerances. While we cannot reverse structural damage to the block or crank if beyond repair, in most cases the engine will perform and last like new. We'll advise if a replacement is a better option.
How long does a high-mileage rebuild take?
Typically 3–5 working days from arrival at our workshop, depending on the engine type and required machining. We'll give you a clear timeline when we provide the quote.
Is a high-mileage rebuild always cheaper than replacing the engine?
Often yes, especially for older or rare engines. However, we always assess both options and provide a transparent comparison. We never recommend a rebuild if a replacement is genuinely more cost-effective or reliable.
Do you offer a warranty on high-mileage rebuilds?
Yes, every engine rebuild comes with a 12-month unlimited-mileage warranty. This covers parts and labour for any defect arising from the rebuild work.