The RZ 300e is the front-wheel-drive, single-motor variant of Lexus's first dedicated electric SUV, built on Toyota's e-TNGA platform shared with the bZ4X and Subaru Solterra. It targets the premium compact electric SUV segment with a 64 kWh usable battery and up to 480 km WLTP range. Toyota/Lexus electrification experience and conservative battery management underpin the car, though being a first-generation EV platform means some software and electrical teething issues persist.· more· less

Toyota/Lexus build quality 10-year battery warranty available

12V battery drain on e-TNGA Real charging speed below spec

Buy if: You want a premium electric SUV with strong Toyota/Lexus warranty support and mainly charge at home overnight.

Avoid if: You rely heavily on DC fast charging for long trips or park the car unused for more than a week at a time.

Maintenance costs

€550 – €1,200/year

at 15,000 km/year

Fixed costsservice, tyres, brakes €400 – €800 /yr

Risk bufferunplanned repairs €150 – €400 /yr

Price estimates are based on German asking prices. Prices and costs vary by vehicle condition and location.

Maintenance costs

€550 – €1,200 per year

€400 – €800

service, tyres, brakes

€150 – €400

repair buffer

Buying a used Lexus RZ? Check its history.

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Buying a used Lexus RZ? Check its history.

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Common Problems

12V auxiliary battery drain

€150 - 3501 of 6

Small 12V battery drains within days if the car sits unused, leaving it completely unresponsive · more· less

The most commonly reported issue across the entire e-TNGA platform (bZ4X, Solterra, and RZ). The vehicle's standby systems draw enough power to flatten the 12V auxiliary battery within 7-14 days of inactivity, even when the main high-voltage battery is fully charged. When the 12V battery dies, the car cannot unlock, power on, or respond in any way. Some owners have reported the battery dying three times within two weeks. The exact root cause remains unconfirmed; potential factors include DC-DC converter software behaviour, telematics polling, and third-party app wake-ups. Toyota/Lexus has released software updates that improve the situation, but many owners still recommend keeping the car on a trickle charger (CTEK MXS 5.0 or similar) when not driven daily. Replacement of the 12V battery costs approximately €150-250. The issue tends to recur if the underlying software has not been updated.

HVAC defroster system shutdown

€0 - 2,5002 of 6

Software fault can disable the heater and windscreen defroster entirely when an AC compressor error is detected · more· less

A safety recall (EU campaign 25SD-075) covers 2023-2025 RZ models. When the HVAC control ECU detects an electrical compressor fault, it enters a failsafe mode that incorrectly shuts down the entire heater and defroster system, not just the AC. This can leave the windscreen unable to defrost in cold conditions. The fix involves a software update to the HVAC control ECU, and dealers also inspect the electric AC compressor, replacing it free of charge if necessary. If the recall has been completed, the cost is zero. If the car is outside the recall scope or the compressor has failed out of warranty, replacement costs approximately €1,500-2,500 at a Lexus dealer including parts and labour.

DC fast charging speed below specification

€03 of 6

Real-world DC charging rarely reaches the advertised 150 kW peak, with some sessions stuck at 30-50 kW · more· less

While the RZ 300e is rated for up to 150 kW DC fast charging, real-world tests and owner reports consistently show peak speeds of 90-110 kW under ideal conditions. Some owners report sessions that never climb above 30-50 kW, particularly in cold weather or when the battery is not preconditioned. The 10-80% charge time of approximately 30 minutes is achievable only under ideal conditions (low starting SOC, warm battery, compatible charger). This is not a defect that can be repaired but a design characteristic that significantly impacts long-distance usability. For owners who primarily charge at home, this is a minor inconvenience. For those relying on public DC charging, it can add substantial time to longer journeys. A software update may improve charging curve management, but the fundamental hardware limitation remains.

Infotainment software freezes and glitches

€0 - 4004 of 6

Touchscreen occasionally freezes, responds sluggishly, or requires a system restart · more· less

The 14-inch infotainment display can freeze or become unresponsive, requiring a system restart. The Lexus companion app has also been reported as unreliable, with intermittent connection failures and incorrect range estimates. These issues are software-related and have been partially addressed through over-the-air updates and dealer software flashes. A system reset (holding the power button) resolves most immediate freezes. In rare cases where the head unit itself is faulty, replacement costs approximately €300-400. The range estimate display is a particularly common complaint, with the predicted range sometimes fluctuating by 30-50 km between drives under similar conditions.

Rearview camera display failure

€0 - 3005 of 6

Rearview camera may freeze or show a blank screen when the car is put in reverse · more· less

A recall (EU campaign 25SD-108) covers 2023-2025 RZ models for a software error that can cause the rearview camera display to freeze or go blank when the car is shifted into reverse. This is a safety concern as it removes rear visibility during reversing. The fix is a free parking assist software update at a Lexus dealer. If the recall has been completed, the cost is zero. Outside the recall, if the camera module itself needs replacement, costs are approximately €200-300.

Low battery warning system inadequacy

€06 of 6

Battery depletion warning may appear very late, leaving insufficient reserve to reach a charging station safely · more· less

Isolated reports suggest the low battery warning may appear very late, in some cases at 0% state of charge, providing almost no time to find a charging station. At very low charge levels, the car can lose propulsion assistance and power steering. This appears to be a software calibration issue rather than a hardware defect, and more recent software versions provide earlier and more prominent low-battery warnings. There is no repair cost as the issue is resolved through software, but buyers should verify the latest software version has been applied.

Few mechanical concerns, but electrical and software teething issues persist

The Lexus RZ 300e benefits from Toyota's decades of electrification experience, and reports of drivetrain or battery pack failures are very rare. The 12V battery drain is the most common complaint and is manageable with a trickle charger. The HVAC defroster recall should be verified as completed on any car being considered. As a first-generation dedicated EV platform, the RZ shows more software-related teething issues than Lexus's mature hybrid models, but these are being addressed through updates. The conservative battery management strategy and the available 10-year battery warranty provide strong long-term reassurance.

Pre-Purchase Inspection Checklist

General checks

Service history
Complete Lexus dealer records are essential. Annual dealer servicing maintains eligibility for the extendable warranty programme.
Tires
Check tread depth and age. The car weighs over 2,000 kg, which accelerates tire wear. Budget for replacement every 30,000-40,000 km.
Body condition
Inspect all panels for damage. Check underneath for scrapes to the battery enclosure, which sits low between the axles.
Test drive
Drive for at least 20 minutes including varied speeds. The cabin is very quiet, making any suspension or drivetrain noises easy to detect.

Specific for this vehicle

Test 12V battery voltage with the car off
Should read 12.4V or above. Ask how often the car sits unused and whether a trickle charger is used. If the voltage is below 12.2V, the battery may need replacement.
Verify HVAC defroster recall completed
Contact Lexus with the VIN to confirm recall 25SD-075 has been completed. Test the defroster function during the viewing.
Verify rearview camera recall completed
Contact Lexus with the VIN to confirm recall 25SD-108 has been completed. Shift into reverse and check the camera display works without freezing.

+ 3 more checksShow less

Test a DC fast charge session if possible
Start with battery below 30% on a 150 kW+ charger. The car should reach at least 80-100 kW peak. Charging speed stuck below 50 kW may indicate a thermal management or software issue.
Check battery state of health
Request a battery health report from the Lexus dealer. At the car's current age, expect 95%+ capacity remaining. The 10-year warranty covers degradation below 70%.
Check software version is current
Ask the dealer to verify the latest software updates have been applied. Several issues (12V drain, range estimation, HVAC) have been addressed through updates.

Recalls and Technical Service Bulletins

HVAC defroster/defogger system failure due to software fault in HVAC control ECU (2023-2025 models, EU campaign 25SD-075) Verify completed

Rearview camera display freeze or blank screen due to parking assist software error (2023-2025 models, EU campaign 25SD-108) Verify completed

Contact a Lexus dealer with the VIN to verify all applicable recalls have been completed. The HVAC defroster recall is the most important to confirm, as it affects the windscreen defrost safety function.

Warranty Status

Factory warranty (3 years / 100,000 km) Active on most used RZ 300e models (2024+ production)

Extendable warranty (up to 10 years) Free extension with annual Lexus dealer servicing

High-voltage battery (8 years / 160,000 km) Covers capacity degradation below 70%, extendable to 10 years with annual Lexus health checks

Rust perforation warranty (12 years) Active on all RZ models

The RZ 300e benefits from Lexus's generous warranty programme. The standard 3-year warranty can be extended free of charge up to 10 years with continuous annual Lexus dealer servicing. The high-voltage battery warranty is 8 years or 160,000 km as standard, extendable to 10 years with annual dealer health checks. Given that most RZ 300e models are from 2024 onwards, factory warranty coverage is likely still active.

↔ Also consider

Lexus UX 300e 2020-2025

Smaller Lexus EV on a converted platform. Even fewer reported issues but limited by CHAdeMO charging and shorter range on early models.

Volkswagen ID.4 Pro (77 kWh) 2021-present

More affordable with similar range. Known for software instability and 12V battery issues. CCS charging infrastructure is more widespread.

BMW iX3 G08 2020-2025

Premium RWD electric SUV competitor. Larger battery and faster real-world charging but more complex drivetrain and higher service costs.

Lexus NX 350h 2022-present

Same-brand hybrid alternative with no range anxiety. Proven hybrid powertrain and lower purchase price but higher fuel running costs.

Hyundai Ioniq 5 77.4 kWh AWD 2021-2024

800V architecture enables much faster DC charging. ICCU and 12V battery failures are documented concerns, but 5-year warranty provides cover.

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.