Is the Lexus IS reliable?
53% of the 44 we inspected scored 60/100 or higher, with an average of 59/100 — it scores a little below average.
44
Cars inspectedreal pre-purchase inspections59/100
Average conditionall cars we check: 61/10053%
In good shape (60+)all cars we check: 56%Across 44 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
52%
Oil leaks · Engine
48%
Fuel trim out of range · Engine
45%
Active error codes · Electronic equipment
32%
Leaking or worn shock absorbers · Suspension
27%
Share of inspected Lexus ISs where each item was flagged.
How they score
Excellent 14%
Good 39%
Mediocre 27%
Poor 20%
Hidden history
What the seller might not mention — how often we find it on this model.
86%had a repainted or replaced panelall cars: 74%
2%showed structural repairall cars: 4%
27%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; a band under 20 cars follows the nearby bands, so a run above the all-cars line stays above it, and a band of 20 or more uses the rate we measured; where a band has too few cars, the line follows the trend between the bands on either side; rolled-back odometers excluded from the mileage curve). The dashed grey curve is all cars we check.
More on Lexus
GS
27 cars · 71% good
RX
76 cars · 67% good
ES
53 cars · 51% good
GX
28 cars · 50% good
LS
29 cars · 38% good
Other Lexus models we've inspected — or see the full Lexus profile.
Straight from recent Lexus IS reports
2017 Lexus IS · 89k mi — flagged: fault codes recently cleared, oil leaks, worn brake rotors. Inspected Oct 12.
2015 Lexus IS · 111k mi — flagged: cracked or torn suspension bushings. Inspected Oct 10.
The bottom line
Paint is the norm, not a warning by itself: 86% show a repainted panel, while structural repairs stay rare. A respray does not mean the car was wrecked, and it does not mean it was cared for. Spend your time under the hood. Oil leaks and fuel-trim faults are the faults that should change the price, then worn tires and shocks. Active codes on a wet engine are a walk-away or a hard discount, not a later fix. Take it home only with a clean scan, a dry underside, and money already set aside for rubber.
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 (52%), oil leaks (48%), fuel trim out of range (45%). Have these checked before buying.
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Should I worry about cleared fault codes?
On 27% 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 44 inspections · updated Oct 21, 2026
