Lexus's best-selling SUV, paired with its most dependable V6 — about as close to a worry-free used purchase as the midsize luxury SUV segment gets.
The RX's midsize SUV body is an easy, unstressed load for this V6 — never strained, which is a large part of why both engine and vehicle have such a strong reputation for low-drama, long-term ownership.
A hybrid variant (RX450h) was also offered across this generation — worth asking about specifically if you're comparing powertrains, since it carries a different (though also generally well-regarded) drivetrain profile.
This is about the car itself — for engine-specific failure points, see the dedicated engine page below.
This RX350 is a defining application of the 3.5L V6. Full detail on this engine's exceptional reliability track record lives on the dedicated engine page.
FULL ENGINE BREAKDOWNLexus 3.5L V6 (2GR-FE) — Reliable or Not →Beyond general maintenance history, there's genuinely little engine-specific risk to flag on this combination — one of the more confidently recommendable SUVs on this site.
Inspect for rust around wheel arches and the underbody, especially on cars from regions that salt roads in winter.
Check that infotainment and comfort electronics function correctly, more relevant to overall satisfaction than any mechanical concern.