2021 Land Rover Discovery Problems: 4 Known Issues
2021 model year · 3,880+ owner reports · Updated October 2026
According to Au7o's analysis of 3,880+ owner reports, the 2021 Land Rover Discovery has 4 documented known issues, with 2 rated critical. The most serious are Loose Battery Ground Stud — Electrical Power Loss and Shutdown While Driving (20V694 / 21V457) and MHEV DC-DC Converter and Electrical Load-Balancing Failure — Recalls 26V248 and 26V599. The most commonly reported issue is Sunroof and A-Pillar Water Leaks with 3,200 owner reports. Across all issues with published estimates, repair costs range from $100 to $1,200. DIY maintenance guides at au7o.io.
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All 4 Known Issues
NHTSA Recalls9 recalls
ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:FILTER/SCREEN
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2023-2024 Defender, 2024 Discovery, Range Rover, Range Rover Sport, and Range Rover Velar vehicles. The oil filter housing can crack and leak oil into the engine compartment.
ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2021-2024 Land Rover Range Rover Velar and Land Rover Discovery, 2020-2023 Land Rover Range Rover Evoque, 2019-2024 Land Rover Range Rover Sport, 2020-2024 Land Rover Range Rover, 2020 Land Rover Discovery Sport, 2020-2024 Land Rover Defender, 2021-2024 Jaguar F-Pace, and 2021-2022 Jaguar E-Pace mild-hybrid electric vehicles (MHEVs). Insufficient electrical load balancing during times of high demand can lead to a current overload condition and malfunction of the DCDC converter. A failure of the DC-DC converter will result in a loss of 12-Volt system charging and can lead to complete loss of drive power and exterior lighting.
AIR BAGS:FRONTAL
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2020-2026 Land Rover Defender, 2021-2026 Discovery, and 2022-2026 Range Rover vehicles. The driver’s air bag clockspring connector may corrode, which can cause the air bag not to deploy as intended.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2021-2025 Land Rover Discovery vehicles. Water may not be able to drain away from the rearview camera due to insufficient drain holes, which may result in damage to the rearview camera.
ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2019-2024 Land Rover Range Rover Sport, 2020-2024 Land Rover Range Rover Evoque, Land Rover Range Rover, Land Rover Discovery Sport, Land Rover Defender, 2021-2024 Land Rover Range Rover Velar, Jaguar E-Pace, F-Pace, and Land Rover Discovery vehicles. The DC-DC converter may malfunction due to an electrical overload that can occur during high power demand. Additionally, a software error can cause the DC-DC converter to stop functioning at vehicle start-up under certain circumstances. Failure of the DC-DC converter will result in the loss of 12-Volt system charging and can lead to complete loss of drive power and exterior lighting.
+ 4 more recalls. Check all on NHTSA.gov
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Frequently Asked Questions
What are the most common Land Rover Discovery problems?
According to Au7o's analysis of 3,880+ owner reports, the 2021 Land Rover Discovery has 4 documented issues. The most frequently reported are: Loose Battery Ground Stud — Electrical Power Loss and Shutdown While Driving (20V694 / 21V457), MHEV DC-DC Converter and Electrical Load-Balancing Failure — Recalls 26V248 and 26V599, Sunroof and A-Pillar Water Leaks. Of these, 2 are rated critical and should be addressed promptly.
Is the Land Rover Discovery reliable?
The 2021 Land Rover Discovery has 4 known issues documented across 3,880+ owner reports. 2 issues are rated critical: Loose Battery Ground Stud — Electrical Power Loss and Shutdown While Driving (20V694 / 21V457) and MHEV DC-DC Converter and Electrical Load-Balancing Failure — Recalls 26V248 and 26V599. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Land Rover Discovery problems?
Repair costs for known Land Rover Discovery issues range from $100 to $1,200, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2019-2021 Land Rover Discovery Loose Battery Ground Stud — Electrical Power Loss and Shutdown While Driving (20V694 / 21V457)?
Insufficient battery ground-stud contact can cause electrical faults, no-start, loss of exterior lighting and shutdown while driving. N400 / 20V694 covers selected 2019–2020 Discovery vehicles; N607 / 21V457 covers a further selected 2020–2021 population. The filings identify 11,… Severity: high.
What is the 2021-2024 Land Rover Discovery MHEV DC-DC Converter and Electrical Load-Balancing Failure — Recalls 26V248 and 26V599?
On mild-hybrid (MHEV) Discovery models, the 48V-to-12V DC-DC converter can fail; JLR's April 2026 Part 573 attributed this to an internal fault in the converter's boost control microchip. The 12V system stops charging; within about 10 seconds a red 'Stop Safely Electrical Fault D… Severity: high.
What is the 2005-2024 Land Rover Discovery Sunroof and A-Pillar Water Leaks?
The Discovery is notorious for water leaks through blocked sunroof drains and deteriorated A-pillar seals. Water enters the cabin through the headliner and runs down the A-pillars, pooling in the front footwells. On LR3/LR4 models, this can damage the BECM (body electronics contr… Repairs typically run $100-$1,200. Severity: medium.
What is the 2017-2025 Land Rover Discovery L462 Discovery Air Suspension Height Sensor Failure?
The current-generation L462 Discovery continues the air suspension tradition with its own set of issues. The ride height sensors are particularly prone to failure, giving incorrect height readings that cause the vehicle to sit at uneven heights. The sensors are located at each co… Repairs typically run $300-$800. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.