⚠️ Land Rover manufacturer position
JLR TOPIx documents fuel tank removal and pump access. Warranty excludes misfuel-related damage. Follow DSEAR controls when draining fuel indoors.
Vehicle information
| Make | Land Rover |
|---|---|
| Model | Discovery |
| Market status | Sold new in the UK — right-hand drive |
| Body styles | Large SUV |
| Generations | L462 Discovery 5 (2017–present) |
| Engine options | Petrol: Si4 / Ingenium petrol Diesel: Td6 Ingenium diesel Hybrid: Limited PHEV where offered |
| Fuel tank capacity | Approx. 89 L |
| Fuel system | D7x architecture; diesel SCR with AdBlue |
| Access method | Tank drop or load-floor pump access — consult TOPIx |
| Anti-siphon | Yes — anti-siphon filler on most UK JLR models |
| Service portal | JLR TOPIx (dealer / authorised repairer access) |
Misfuel risk High
UK Discovery Ingenium and earlier TD6/TD8 diesels are sensitive to petrol contamination. JLR common-rail systems can suffer HPFP and injector damage after a short run.
If the engine was not started
Do not start the engine or turn the ignition to RUN. Do not drive. Arrange GBIFDA-certified drainage before contamination reaches the high-pressure pump. Keep receipts for contaminated fuel disposal (Environment Agency / SEPA / NRW / NIEA duty of care).
If the engine was started
If the engine ran on petrol in a TDI, expect inspection of the high-pressure pump, injectors, fuel rail, filters, and low-pressure lines. JLR warranty excludes misfuel damage; follow TOPIx repair scope and consider insurer or Motor Ombudsman routes for disputes.
Access procedure
- Disconnect battery earth and confirm ignition off.
- Depressurise fuel system per TOPIx for your model year.
- Support vehicle and lower fuel tank or access pump module as specified (many JLR SUVs require tank drop).
- Drain contaminated fuel with a fuel cart into approved containers; label waste for hazardous waste consignment where required.
- Renew fuel filters and inspect pump unit seals.
- Refill with correct UK fuel grade; prime low-pressure feed.
- Clear DTCs, check for leaks, road test.
Related models
- Defender
- Range Rover
Frequently asked questions
What should I do if I put petrol in my Land Rover Discovery diesel?
Do not start the engine. Petrol in diesel destroys HPFP lubrication on common-rail TDIs. Call a GBIFDA-certified technician to extract fuel from the tank via the OEM access method and dispose of waste fuel legally.
Can I drive my Discovery to the garage after misfuelling?
No — even a few hundred metres can draw petrol into the high-pressure system. Recovery without starting is the safest option.
Where is the AdBlue filler on diesel Discovery?
AdBlue is separate from diesel — blue cap, smaller neck. Never add fuel to the AdBlue tank; contamination requires specialist cleaning per TOPIx.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
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