X5 vs GV80

The 48V battery in 2023-2024 X5 xDrive40i models can short-circuit internally, causing a 'Drivetrain Malfunction' warning and potential sudden power loss. Symptoms include limp mode at low speeds and, in extreme cases, smoke from the battery. This can lead to a dangerous loss of propulsion while driving.

The rear air springs on 2019-2022 X5 models (especially 2019-2020) can leak, causing the vehicle to sag and the compressor to overwork and fail. Symptoms include visible sagging overnight, a continuously running compressor, and a 'Self-Leveling Suspension Inactive' error. If ignored, it can lead to a rough ride and potential strut tower damage.

The plastic oil filter housing and coolant channels on B58 engines in 2019-2023 X5 models can crack, leading to coolant leaks. Symptoms include a sweet coolant odor, visible residue under the vehicle, and low coolant warnings. If not repaired, overheating can warp the cylinder head, resulting in costly damage.

The transfer case actuator motor in 2019-2021 all xDrive models can fail, causing the xDrive system to disengage and a 'Drivetrain Malfunction' warning. Symptoms include shuddering or clunking during low-speed turns and loss of all-wheel drive. The consequence is a potential complete driveline lock-up if the actuator seizes.

The high-voltage battery junction box or charging relay in 2020-2023 X5 xDrive45e and 2024 xDrive50e models can fail, preventing AC charging and triggering a 'High-Voltage System Error'. Symptoms include intermittent charging failures and reduced EV range. Severe cases can cause melted wiring or arcing in the junction box.

The M-Sport brakes on 2019-2023 X5 models are prone to severe squealing on light braking and premature rotor corrosion, even on new pads. Symptoms include a high-pitched metallic squeal at low speeds and possible pedal pulsation. This is a recognized defect covered by a TSB, not normal wear.

Owners of 2021 through 2025 GV80 models, especially 2021 to 2023, report dead 12V batteries, infotainment screen freezes or crashes, false dashboard warning lights, and faulty sensors. These electrical failures can leave the vehicle unable to start, strand the driver, or disable driver-assistance and comfort features. No reliable repair cost estimate is available from the cited data.

The 2021 model year is the most affected, with complaints involving engine stalling, loss of power while driving, fuel leaks, and difficulty starting. These issues are serious because unexpected stalls contributed to 5 reported crashes and one reported fire. The research does not provide enough cost data to estimate a typical repair price.

The 2021 and 2026 model years show forward collision avoidance as a top complaint area, with symptoms including phantom braking and failure of the system to activate during an imminent collision. Phantom braking can cause rear-end collisions, while non-activation removes a critical safety feature. No defensible repair cost is provided in the research.

For the 2021 model year, airbag system issues are among the top complaint categories. Symptoms include illuminated airbag warning lights, intermittent airbag system errors, and owner concerns about possible non-deployment in a crash. This could result in reduced occupant protection during a collision. The cited research does not include repair cost information.