Common problems · 2020–present
New Defender (L663) problems: 7 things to check
The problems owners and specialists flag most on the Land Rover Defender (L663), the repairs they end up doing and what those cost, plus the years and recalls to watch. Sourced, not scraped.
New Defender (L663) problems to check before you buy
- Recall and campaign statusHave a dealer or diagnostic tool confirm every open campaign is closed. Owners on Defender2.net report an airbag recall and the E005 campaign for 3.0 Ingenium diesels built between 1 March 2024 and 18 April 2026, where the auxiliary belt idler pulley can damage the oil pressure and temperature sensor, causing an oil leak and possible stalling.
- Oil-change historyThe headline service interval is long, and some trucks reach their first service on the original oil. Defender2.net members note the oil-change interval is driven by a separate condition-based counter and many owners change oil every 7,000–10,000 miles. A truck with only dealer visits at 21,000-mile intervals deserves a closer look.
- DC-DC converter (mild hybrids)MHEV trucks have suffered DC-DC converter failures, with owners reporting waits of two weeks to two months for parts. Ask whether it has been replaced and whether the relevant software updates are done.
- Diesel DPF and sensor codesFrequent regenerations (every 35–100 miles) and codes such as P24C6/P24C7 (PM sensor temperature) or P0401 (EGR flow) are documented on the diesels. Scan for stored codes and ask about regeneration frequency before buying a high-mileage D250/D300.
- Steering knock on rough roadsSeveral owners report knocking through the steering on corrugations, traced variously to the lower steering-column UJ, track rod ends, front lower control arms or a replacement steering rack under warranty. Wiggle the wheel at a standstill and listen.
- Coolant loss (P400)Petrol six-cylinder owners report coolant loss from turbo coolant line O-rings, leaky expansion tanks and stone-damaged auxiliary radiators behind the front intakes. Check the level cold and look for crusty residue.
- Coil or air, and which bodyLand Rover fits air to every 110; a 90 can be either. Coil 90s ride and tow fine but lose the air trucks' height adjustment, sit at about 225 mm instead of up to 291 mm, and are rated to wade 850 mm rather than 900 mm.
The repairs New Defender (L663) owners end up doing
| REPAIR | SYMPTOMS | DIFFICULTY | TIME | COST |
|---|---|---|---|---|
| Engine oil and filter (3.0 Ingenium diesel) | Due on the oil-life counter, or you want shorter intervals than the factory schedule. | 2 / 5 | ≈ 2 hours including undertray removal | Oil and filter |
| Lower steering shaft joint and gaiter | Split rubber boot on the lower steering shaft, often spotted on weekly checks or flagged at MOT, sometimes with a knock through the wheel. | 2 / 5 | 1–2 hours | Gaiter £10–50 aftermarket; joint around £200 |
| PM sensor for P24C6 / P24C7 | Engine light after cold starts, codes P24C6/P24C7 (particulate matter sensor temperature circuit), and regenerations every 100 miles or so. | 2 / 5 | ≈ 1 hour | Price of the sensor |
| Chase a P0401 EGR flow fault | Judder and hesitation at low-speed acceleration, especially on 1–2 and 2–3 shifts, then P0401 (EGR flow insufficient) and sometimes P006B. | 3 / 5 | Diagnosis can take several drives | Parts plus labor |
| Coolant loss on the P400 | Coolant dropping from max to min within 100–150 km with no obvious puddle. | 3 / 5 | ≈ 2 hours plus diagnosis | One Australian owner paid AU$580 (about $320 parts, $260 labour) |
| Track rod end for a random clunk | Metallic clunk when steering or when the suspension articulates, at no particular angle. | 2 / 5 | ≈ 1–2 hours per side, plus alignment | Parts plus alignment |
| Re-bond lifting wheel-arch extensions | The outer edge of a dealer-fitted arch extension peeling away from the body. | 1 / 5 | An hour per arch | Price of tape and adhesion promoter |
Each repair links to a step-by-step guide with tools, part numbers and where to buy the parts.
Years with known problems
| YEARS | FLAG | WHAT TO KNOW |
|---|---|---|
| 2020–2024 | Recall | Mild-hybrid trucks covered by DC-DC converter recalls; check the remedy is done |
New Defender (L663) recalls and service bulletins
- DC-DC converter overload can cut drive power (MHEV) ↗ 2020–2024 · NHTSA 26V248000 / 26V599000Mild-hybrid DC-DC converters can fail under high electrical load, ending 12-volt charging and possibly drive power; software remedy, interim letters sent in 2026.
- Driver airbag clockspring connector corrosion ↗ 2020–2026 · NHTSA 26V389000The connector can corrode so the airbag doesn't deploy as intended; dealers apply protective gel (Land Rover D120).
- Engine cam carrier oil channel may be blocked ↗ 2020–2023 · NHTSA 23V044000A blocked channel can cause an oil leak and fire risk; dealers inspect and replace the cam carrier (Land Rover N763).
- Oil filter housing can crack ↗ 2023–2024 · NHTSA 24V450000Oil can leak into the engine bay; dealers replace the housing, filter and O-rings (Land Rover N908).
- PCM can switch off while driving (six-cylinder) ↗ 2020–2021 · NHTSA 21V424000Engine stall without warning; remedy disables Connected Diagnostic Services and OTA diagnostics.
- Smoked rear lights can fail (Defender X) ↗ 2020–2022 · NHTSA 21V435000A voltage spike from bright light on the rear can kill turn, brake and tail lights; assemblies replaced (N598).
- Raised air intake accessory may detach ↗ 2020–2025 · NHTSA 24E102000Dealer-fitted raised air intake VPLEP0543 may not be secured; inspect and reinstall (N964).
- Fuel tank walls too thin ↗ 2026 · NHTSA 26V263000An improperly made fuel tank may leak fuel in a crash, raising fire risk; dealers replace the tank (Land Rover D127).
- Front seat belt pretensioners may be damaged ↗ 2022–2023 · NHTSA 22V523000Driver and passenger belts may not restrain properly; dealers inspect and replace the front belt assemblies as needed (N720).
- TReK-modified 130: brake calipers may detach ↗ 2023 · NHTSA 23V789000Defender 130s modified for the TReK competition may have calipers not reinstalled properly; dealers reinstall them (N848). Check this on any ex-TReK truck.
- E005 idler pulley campaign, 3.0 Ingenium diesel ↗ · E005UK campaign for 3.0 I6 diesels built from 1 March 2024 (diesels weren't sold in the US); confirm it's closed on any diesel truck.
Check any VIN for open recalls at nhtsa.gov/recalls ↗, or see the recall tracker.
Owner questions about New Defender (L663) reliability
Is it reliable?
It's better than its reputation off-road and worse than a Toyota in the workshop. A TFL review collected early-ownership faults, and common owner reports include DC-DC converters on MHEVs, PM/EGR sensor codes on diesels, steering knocks and several recall campaigns. Keep it on warranty or budget for a diagnostic tool and a good specialist.
SOURCE · WIKIPEDIA / DEFENDER2.NETTake the printable New Defender (L663) inspection checklist: every check on this page plus the model-specific ones, on one sheet. Get the checklist →
Sourced from owners, specialists and factory documents; full sources are on the New Defender (L663) guide. Verify torque figures and procedures against the factory service manual (disclaimer).