BatteryMedium
Hybrid battery health on high mileage cars
- Typically appears
- 100,000+ miles
- What to inspect
- Request a hybrid health check from a Lexus dealer
- Typical repair
- HV battery module work · £1,200–£8,000
Is the 2014–2021 Lexus NX reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
6.6/ 10
SolidOn our documented-fault scoring the Lexus NX rates 6.6 out of 10 · solid. We hold 8 known faults for it and none of them are rated critical, so the risk is mostly wear rather than disaster. The weak points cluster around electrical, battery and brakes. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.
Verdict · Buy, but check the known weak points
What the score is built from
- Critical
- 0
- High
- 0
- Medium
- 5
- Low
- 3
Weak points cluster around electrical, battery, brakes, suspension.
Two faults free · full checklist for this exact Lexus NX for $9.
Check this carThe faults that decide it
BrakesMedium
Disc corrosion from regen braking
- Typically appears
- 30,000+ miles
- What to inspect
- Inspect disc faces for pitting
- Typical repair
- Brakes (discs, pads, caliper) · £200–£800
EngineMedium
Rough idle or engine shudder when transitioning from EV to petrol power due to EGR valve carbon build-up.
- Typically appears
- 70,000-100,000 miles
- What to inspect
- Start the vehicle and depress the accelerator to force the petrol engine to engage. Feel for excessive vibration, hesitation, or shuddering through the cabin.
- Typical repair
- EGR valve / cooler replacement · £300–£900
BodyworkMedium
Water ingress pooling in the spare wheel well caused by failing rear light cluster seals or tailgate hinges.
- Typically appears
- 6-8 years
- What to inspect
- Lift the boot floor panel and physically check the lowest point of the spare wheel well and 12V battery tray for dampness, standing water, or rust stains.
- Typical repair
- Starting & charging parts · £150–£650
ElectricalMedium
Power tailgate fails to open fully, drops back down, or emits a loud groaning noise due to weakened motorised struts.
- Typically appears
- 50,000-80,000 miles
- What to inspect
- Operate the power tailgate using the key fob. Listen for grinding noises from the spindle struts and ensure the boot lid holds firmly at its maximum height.
- Typical repair
- Suspension refresh (per axle) · £250–£1,100
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
Inspecting a Lexus NX?
See two faults free, then get the full tickable checklist for this exact car · what to look at, what it costs and how serious it is. Full report $9.
Check this exact car