Land Rover Defender reliability: old vs new

The current Land Rover Defender, sold since 2020, is one of the more reliable cars Land Rover makes. What Car?'s latest Reliability Survey scores it 91.0%, fourth of 14 seven seaters, with faults reported on 14% of cars, even though Land Rover as a brand finished last of 30.

The original Defender, built until 2016, is a different machine with different risks. It is simple and easy to repair, but rust, leaks and worn drivetrains decide whether a particular car is reliable. This guide covers both: what owners report, the recalls on the new model, the faults that cost money on the old one, and what to check before you buy.

New Defender reliability: what the surveys say

The 2020 on Defender has scored well in both of What Car?'s recent surveys, which ask owners about cars up to five years old:

For context, What Car? placed Land Rover 30th of 30 brands in 2026 with 84.9%, so the Defender sits well above the brand average. The weakness owners mention most is not mechanical failure but time: in 2025, more than half of the cars that went wrong spent over a week in the workshop.

Owner comments in the 2026 survey point to warning lights coming on unexpectedly, especially for the electronics and, on diesels, the AdBlue system. Some readers reported repeat visits for the same fault and slow parts supply.

How the Defender compares with other Land Rovers

In What Car?'s 2025 model by model table, the Defender came second of the eight Land Rover models rated, just behind the 2013 to 2022 Range Rover Sport:

One limit is worth knowing. The survey covers cars up to five years old, most of them inside the manufacturer's warranty, so it measures how often things go wrong more than what they cost an owner to fix. The earliest new Defenders are now six years old and out of warranty, and the AA notes that the extra technology in newer Defenders can mean more faults and higher repair bills as they age.

Known faults on the 2020 on Defender

The new Defender's faults are mostly electrical and software related rather than structural. The AA's used car guide lists the issues to look for:

• Coolant leaks, sensor faults and emissions warning lights

• Air suspension faults on cars that have it

• Infotainment, camera, parking sensor and connectivity glitches

• 12 volt battery problems that trigger system warnings

• DC to DC converter problems on some plug in hybrid models

A warning light on a Defender needs a proper diagnosis, because one weak battery or one faulty sensor can bring up several messages at once. Our guide to the AdBlue warning explains how that system works on diesels, and the same principles apply to the Defender's diesel engines.

Recalls on the 2020 on Defender

What Car? lists these recalls for the current Defender at the time of writing. Recall work is free at a Land Rover retailer, and you can check any car on the GOV.UK vehicle recall checker.

The security updates matter for insurance as well as safety. Ask a seller for proof both were done, and check the car's theft history before you buy.

Classic Defender reliability: 1983 to 2016

The original Defender, which grew out of the Land Rover 110 launched in 1983 and was built until 2016, is mechanically simple, and most of its parts can be repaired or replaced. That simplicity is a large part of its appeal. Its weaknesses come with age, and the AA's guide puts rust at the top of the list:

• Corrosion in the chassis, the bulkhead and the door frames. Structural rust is the most expensive problem to put right.

• Water leaks around the doors, footwells, windscreen and load area.

• Diesel engine wear: oil leaks, turbo wear and neglected timing belts on older diesels, plus injector wiring and cooling system faults on the Td5.

• Drivetrain wear in the gearbox, transfer box and differentials.

• Suspension and steering: worn bushes and dampers, and steering wobble.

A classic Defender with a sound chassis and bulkhead and a documented service history can be a dependable vehicle. One with hidden corrosion can cost more to repair than it is worth, so the structure matters more than the mileage.

What keeps a Defender reliable

For the new Defender, servicing on time and keeping the software up to date are the two habits that matter most. Follow the service message on the instrument panel, ask for any open recalls or software campaigns to be done at a Land Rover retailer, and look after the 12 volt battery, because a weak battery causes warnings that look like faults elsewhere.

For the classic Defender, the priorities are rust prevention, regular oil changes and timing belt replacement on schedule. Wash mud and salt off the underside, and check the chassis and bulkhead at every service so small patches of corrosion are treated before they spread.

Land Rover sets a schedule for each model and engine. Our guide to Land Rover and Range Rover service costs explains how the schedule works and what the later services add.

Checks to make before you buy a Defender

2020 on Defender

1. Run the registration through the GOV.UK recall checker and ask for proof the recalls and both security updates were done.

2. Check the service history for regular servicing at or before the interval.

3. Start the car and make sure every warning light goes out. A diagnostic scan shows stored fault codes that a clear dashboard hides.

4. Test the infotainment, cameras, parking sensors and connectivity, and raise and lower the air suspension through every height if fitted.

5. On plug in hybrids, check the charging works and no hybrid system warnings show.

Classic Defender

1. Inspect the chassis, rear crossmember, bulkhead, footwells and door frames for rust and repairs.

2. Look for damp carpets and water marks that point to leaks.

3. Check for oil leaks and listen for turbo whine, and ask when the timing belt was last changed.

4. Drive it through all the gears, high and low range, and feel for clunks, whines or steering wobble.

Land Rover Defender reliability questions

Is the new Land Rover Defender reliable?

By Land Rover's standards, yes. It scored 91.0% in What Car?'s 2026 survey with a 14% fault rate, and 94.7% in 2025, well above the brand's 84.9%. The common complaints are electrical warnings and slow repairs rather than major mechanical failures.

Is the old Defender more reliable than the new one?

They fail in different ways. The old Defender is simpler and easier to fix, but age brings rust, leaks and drivetrain wear. The new Defender is more refined and more complex, so its faults tend to be electrical and software related.

What is the biggest problem with the classic Defender?

Rust. Corrosion in the chassis, bulkhead and door frames is the most expensive fault on an old Defender, according to the AA.

Are Defender recalls free?

Yes. Recall work is carried out free at a Land Rover retailer, and you can check any car on the GOV.UK vehicle recall checker.

Can I have my Defender serviced by an independent garage?

Yes. Under the UK Motor Vehicle Block Exemption Order, as the Competition and Markets Authority explains, an independent service does not in itself void the warranty, provided the work follows Land Rover's schedule and uses parts of matching quality. Recalls and warranty repairs stay with a Land Rover retailer.

Defender servicing and diagnostics near High Wycombe

Wheels VT is an independent Land Rover specialist at Southside Farm, Wooburn Green, High Wycombe, trading since 2001. We service Defenders to Land Rover's schedule with genuine parts and diagnose warning lights and air suspension faults.

Servicing starts from £100 plus VAT and computer diagnostics from £78 plus VAT. See our Land Rover servicing page, call 01494 670922 or book online. Considering a Range Rover instead? Read our guide to Range Rover reliability.