The first fully electric Lexus, built on a converted UX crossover platform. Toyota/Lexus reliability pedigree keeps mechanical issues to a minimum, and the 10-year battery warranty is class-leading. The early model (2020-2022) has a 54.3 kWh air-cooled battery with around 315 km WLTP range; the 2023 facelift doubled down with a 72.8 kWh pack pushing range to 450 km. Production ended in November 2025.
Exceptional build quality
10-year / 1,000,000 km battery warranty
CHAdeMO limited to 50 kW DC
Limited range on pre-2023 models
Buy if: You value Toyota/Lexus reliability and mainly charge at home, with driving needs within the car's range.
Avoid if: You regularly need DC fast charging or long-distance capability, as CHAdeMO infrastructure is being phased out.
Expected Annual Maintenance Costs
Common Problems
Small 12V battery drains within days if the car sits unused, preventing startup despite full main battery · more· less
The most commonly reported UX 300e issue. The auxiliary 12V battery is undersized relative to the car's standby power draw. Multiple owners report the battery going flat after just 7-12 days of inactivity, with some experiencing repeated failures. Early software versions of the 'Phone Home' telematics module kept the system active continuously, accelerating drain. Lexus released a software update that resolved the worst cases. Replacement of the 12V battery costs €150-250, and the issue tends to recur if the car sits unused without a trickle charger. A NOCO Genius or CTEK trickle charger is strongly recommended for owners who do not drive daily. Keeping the main battery above 50% also helps, as the DC-DC converter can top up the 12V system when the car is plugged in.
Defective heater element may fail over time, reducing windscreen defrost capability · more· less
A recall affecting UX 300e models built between 2021 and 2023 addresses a manufacturing defect in the electric heater element within the HVAC system. The heater can deteriorate over time, causing the windscreen defrost function to fail. This is a safety concern as it reduces driver visibility. Lexus replaces the heater element free of charge under the recall. The same issue also affects the Lexus RZ and Toyota bZ4X. If buying outside the recall period or if the recall has not been completed, out-of-warranty replacement costs approximately €400-800 including labour. Verify recall status with a Lexus dealer before purchase.
Knocking or creaking sounds from the rear suspension, caused by worn bushes or anti-roll bar links · more· less
The UX platform was originally designed for the lighter hybrid/petrol variants. The 300e carries approximately 400 kg of additional battery weight, which places more stress on rear suspension components. Some owners report knocking or creaking noises from the rear, particularly over uneven roads. The cause is typically worn trailing arm bushes or anti-roll bar drop links. Replacement of both drop links costs approximately €150-250 at an independent garage. If bushes need replacing, costs rise to €350-500 due to additional labour. This is more of a wear-related item accelerated by the extra weight rather than a design defect, and typically appears after 60,000-80,000 km.
Remote Touch trackpad interface can freeze or respond sluggishly, requiring a system restart · more· less
Pre-2022 UX 300e models use the Lexus Remote Touch trackpad interface rather than a touchscreen. This system is widely criticised for being difficult to use and can occasionally freeze or become unresponsive. Software updates from Lexus have improved stability. In rare cases, the head unit may need replacement (approximately €250-350), but most issues resolve with a software update or system restart. The 2022 facelift replaced the trackpad with a conventional touchscreen, resolving this issue entirely.
CHAdeMO DC charging rarely reaches the rated 50 kW maximum, with real-world speeds of 35-44 kW typical · more· less
This is a design limitation rather than a defect, but it significantly impacts usability. The UX 300e uses the CHAdeMO DC fast charging standard, which is being phased out across Europe in favour of CCS. Maximum theoretical speed is 50 kW, but real-world charging typically achieves only 35-44 kW. AC home charging is limited to 6.6 kW via the onboard charger. As CHAdeMO infrastructure shrinks, finding compatible rapid chargers will become increasingly difficult. This is the single biggest practical concern for long-term ownership. There is no cost to repair as it is inherent to the design, but it materially affects the car's usability and resale value.
One of the most reliable EVs on sale, with minimal mechanical risk
The Lexus UX 300e benefits from Toyota's decades of electrification experience and exceptional build quality. Actual mechanical failures are extremely rare. The 12V battery drain is the most common complaint and is easily managed with a trickle charger. The air-cooled battery has proven durable, and the 10-year warranty provides significant peace of mind. The primary concern for prospective buyers is not reliability but the practical limitation of CHAdeMO charging, which is becoming obsolete across Europe.
Recalls and Technical Service Bulletins
HVAC electric heater element defect — windscreen defrost failure (2021-2023 production)
Verify completed
Front/rear camera manufacturing fault — camera housing may allow water ingress (2023 production, campaign 24SD-065)
Verify completed
Brake booster pump motor — defective plastic brush holder may cause loss of braking assistance (2019 production, applies to UX 250h — verify if applicable to 300e)
Verify completed
Contact a Lexus dealer with the VIN to verify all recalls have been completed. The HVAC heater element recall is particularly important for 2021-2023 production cars, as it affects the windscreen defrost safety function.
Warranty Status
Factory warranty (3 years / 100,000 km)
Expired on 2020-2022 models, may remain on 2023+
Extendable warranty (up to 10 years)
Free extension with annual Lexus dealer servicing
High-voltage battery (10 years / 1,000,000 km)
Covers capacity degradation below 70% — class-leading coverage
Rust perforation warranty (12 years)
Active on all UX 300e models
Lexus offers the most generous battery warranty in the industry: 10 years or 1,000,000 km with a 70% capacity guarantee, provided the car receives annual dealer health checks. The standard 3-year warranty can be extended free of charge up to 10 years with continuous annual Lexus dealer servicing. This makes the UX 300e one of the best-warranted used EVs available.
This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.