Lexus NX 350h
The A25A-FXS 2.5L hybrid from the Dynamic Force series is rock-solid — 250k+ km realistic. Clean EGR valve from 70k km to prevent coking. EGR cooler can crack at any mileage — watch coolant level.
Hybrid NX — the rational choice
The NX 350h combines the proven 2.5L hybrid with the new NX platform. 243 hp combined, smooth power delivery, 36 mpg combined. The hybrid system is shared with millions of Toyota vehicles — reliability data is extensive and positive. EGR clogging around 100k miles is the main concern. New infotainment is excellent. The NX 350h is what the original NX should have been.
Engine Weaknesses 3
Toyota Technical Tip T-TT-0672-21 documents oil leaks from the No. 2 oil pan on 2021-2022 TMMK-produced A25A-FXS engines. A manufacturing process issue causes the oil pan gasket to fail prematurely. Dealer repair under warranty involves oil pan reseal.
Symptoms: Oil drip from lower engine, oil spots on ground, oil residue on oil pan surface
During short trips at freezing temperatures, moisture from blow-by gases condenses in the crankcase, producing milky emulsion on the oil cap and in the oil. TSB EG-00731T-TME (2022) addresses this. Not a head gasket leak — resolved by occasional longer drives that bring the engine to full operating temperature.
Symptoms: Milky residue on oil cap, white deposits inside valve cover, low oil pressure warning in severe cases
The EGR system accumulates carbon deposits over time. Hybrid operation with frequent engine start-stop cycles accelerates buildup. EGR valve cleaning or replacement typically needed around 100,000 miles. Preventable with occasional sustained highway driving.
Symptoms: Check engine light, rough idle, reduced power, increased emissions
Vehicle Weaknesses 10
Loose connection in spiral cable may prevent driver airbag deployment in a crash. Recall 25LA02.
Wheel lug bolts corrode prematurely, making removal difficult during tire changes. Lexus is aware and developing a remedy. Apply anti-seize compound during tire rotations as prevention.
12V battery drains if vehicle sits unused for extended periods. Electronic modules fail to enter deep sleep. More common on vehicles with multiple connected services active.
Same VSC software issue as the RX ALA10 — stability control may not re-enable after restart. Free dealer software update.
Transmission jerks shifting between drive and reverse, hesitates on acceleration. Class action filed.
New touchscreen infotainment has software bugs: CarPlay/Android Auto disconnects, Bluetooth pairing drops, screen freezes. Software updates improve over time. A significant improvement over the old touchpad despite the bugs.
Reports of windshield cracking without visible impact damage. Stress cracks may develop from temperature differentials or manufacturing defect. OEM windshield replacement costs over $1,000 due to integrated sensors and cameras. Aftermarket glass is significantly cheaper but requires recalibration of safety systems.
Electric fuel door release fails to open when button is pressed. Dealer replacement under warranty. Known issue acknowledged by Lexus service departments.
Slight thump or jar when shifting from second to third gear during cold starts. Goes away once the transmission warms up. Reported across multiple 2022+ NX units. Not a progressive failure. Likely a calibration characteristic rather than a defect.
Qi pad stops charging after 30 seconds, especially iPhones with cases. Revised unit 861C0-F6010.