Is the Lexus IS reliable?
51% of the 43 we inspected scored 60/100 or higher, with an average of 59/100 — it scores a little below average.
43
Cars inspectedreal pre-purchase inspections59/100
Average conditionall cars we check: 61/10051%
In good shape (60+)all cars we check: 56%Across 43 used Lexus ISs we inspected, this model scores a little below average — average condition 59/100 vs 61 for all cars we check. Every number on this page comes from real pre-purchase inspections — cars people were about to buy and paid an independent inspector to go through point by point, engine to underbody, paint depth to error codes. Not owner surveys, not warranty statistics, not forum lore: what we actually found.
What we found
Most common faults
Tires condition & wear · Brakes and tires
51%
Oil leaks · Engine
49%
Fuel trim out of range · Engine
47%
Active error codes · Electronic equipment
33%
Leaking or worn shock absorbers · Suspension
28%
Share of inspected Lexus ISs where each item was flagged.
How they score
Excellent 14%
Good 37%
Mediocre 28%
Poor 21%
Hidden history
What the seller might not mention — how often we find it on this model.
86%had a repainted or replaced panelall cars: 75%
2%showed structural repairall cars: 4%
26%had fault codes recently clearedall cars: 24%
How long does a IS stay good?
Good cars by mileage
Share of Lexus ISs in good shape (scoring 60+/100) by mileage and by age when we inspected them (each dot ≥5 cars; rolled-back odometers excluded from the mileage curve). The dashed grey curve is all cars we check.
More on Lexus
GS
26 cars · 69% good
RX
76 cars · 67% good
ES
51 cars · 49% good
GX
27 cars · 48% good
LS
29 cars · 38% good
Other Lexus models we've inspected — or see the full Lexus profile.
Straight from recent Lexus IS reports
2015 Lexus IS · 111k mi — flagged: cracked or torn suspension bushings. Inspected Oct 10.
2011 Lexus IS · 81k mi — flagged: smoke, excessive vapor in exhaust. Inspected Sep 25.
The bottom line
Assume the car in front of you has already been painted, then go straight to the engine and the rubber. Oil seepage and fuel-trim problems show up nearly as often as worn tires, and a third still carry live error codes, so a scan and a careful look for leaks matter more than the shine. If you find wet oil, out-of-range fuel trim, and tired shocks together, negotiate hard or walk; pay up only when the bay is dry and the tires have even life left. Structural repairs are rare, so the real risk is deferred maintenance, not a bent frame.
FAQ
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What are the most common problems on a used Lexus IS?
The items we flag most often are tires condition & wear (51%), oil leaks (49%), fuel trim out of range (47%). Have these checked before buying.
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Should I worry about cleared fault codes?
On 26% of these cars the ECU codes had been erased shortly before sale, which can hide active faults. Ask for a diagnostic scan and start the engine from cold.
Thinking of buying a Lexus IS? Get the exact car inspected before you pay.
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Based on 43 inspections · updated Oct 11, 2026
