The Most Unreliable Used SUV With A 46% Fault Rate Could Cost You Thousands In Repairs

Due to high depreciation, older luxury vehicles can be a more affordable gateway into owning an otherwise expensive model. The catch is that the lower purchase price can be offset by steep repair bills, especially when the vehicle is both failure-prone and expensive to fix. That is the problem with the 2004-2017 Land Rover Discovery model years, which earned a poor 47.8% reliability rating and a 46% fault rate in What Car?'s used-car reliability survey of nearly 24,000 drivers. In the U.S., that range covers the 2004 Discovery Series II and the redesigned 2017 Discovery. It also includes the 2005–2009 LR3 and 2010–2016 LR4, which are the American-market names for those Discovery generations.

That 46% fault rate means nearly half of surveyed Discovery owners reported at least one fault from 2021 to 2023. That spotty reliability is unsurprising, as Land Rover is rarely counted among the most reliable luxury car brands.

The survey also pointed out that Discovery SUVs suffered faults involving the brakes, battery, fuel system, and electrical components – but the biggest problems came from the suspension and engine. According to RepairPal, engine problems can easily run from about $900 on older models like an LR3 to more than $5,000 for more complicated repairs on a more recent LR4. Suspension problems are also expensive, especially for the air-suspension systems featured on 2005 through 2017 models. For example, RepairPal estimates replacing the compressor on a 2017 Discovery can cost around $2,000, while replacing suspension components on an LR3 or LR4 can cost $1,300 to $2,000, depending on the repair.

On their own, the Discovery's repair estimates may sound like just another cost of owning an old SUV. The problem becomes clearer when you compare them with mainstream used alternatives like the Toyota 4Runner, Nissan Pathfinder, or the Jeep Grand Cherokee. This makes it more obvious how much more money Discovery owners can wind up spending on repairs.

RepairPal estimates the Land Rover LR3 costs about $929 a year in average repair and maintenance costs. That is nearly double RepairPal's estimate for a 2009 Nissan Pathfinder, at $477, and meaningfully higher than the $601 yearly cost estimate for a 2009 Jeep Grand Cherokee and the 2009 Toyota 4Runner's $500 annual upkeep projection. Maintaining an LR4 could be even more expensive, with RepairPal estimating its average annual repair and maintenance cost at $1,241.

Part of the problem is that the Discovery is still a complex luxury SUV, even if depreciation makes earlier generations more affordable to buy. That complexity shows up financially when repairs are needed, which could inform why CarEdge estimates a Land Rover Discovery can cost about $17,665 to maintain and repair over 10 years. That's even higher than the Porsche Panamera, another luxury vehicle with terrible upkeep costs. A Toyota 4Runner, by comparison, is estimated to need only about $6,322 over the same period, per CarEdge — and it's also counted among the reliable cars owners keep for many years.