Is the Lexus IS reliable?
48% of the 40 we inspected scored 60/100 or higher, with an average of 57/100 — it scores a little below average.
40
Cars inspectedreal pre-purchase inspections57/100
Average conditionall cars we check: 61/10048%
In good shape (60+)all cars we check: 55%Across 40 used Lexus ISs we inspected, this model scores a little below average — average condition 57/100 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
53%
Oil leaks · Engine
53%
Fuel trim out of range · Engine
48%
Active error codes · Electronic equipment
35%
Low coolant / cooling system issues · Engine
28%
Share of inspected Lexus ISs where each item was flagged.
How they score
Excellent 13%
Good 35%
Mediocre 30%
Poor 23%
Hidden history
What the seller might not mention — how often we find it on this model.
88%had a repainted or replaced panelall cars: 75%
3%showed structural repairall cars: 4%
25%had fault codes recently clearedall cars: 23%
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
74 cars · 66% good
ES
48 cars · 48% good
GX
26 cars · 47% good
LS
27 cars · 37% good
Other Lexus models we've inspected — or see the full Lexus profile.
Straight from recent Lexus IS reports
2007 Lexus IS · 176k mi — flagged: fault codes recently cleared, fuel trim out of range, tires condition & wear. Inspected Aug 12.
2016 Lexus IS · 138k mi — flagged: low coolant / cooling system issues, oil leaks, vibration. Inspected Aug 6.
The bottom line
The Lexus IS market is littered with cars that look sharper than they run. Nearly nine out of ten have at least one repainted panel, so treat every tidy exterior as a potential cover-up and demand a paint-depth check plus underbody photos before you fall for the shine. Once past the body, the real money sinks are under the hood: oil leaks and fuel-trim problems show up on more than half the cars, often paired with active codes or cooling-system neglect. Start every inspection with a cold oil-pan look, a full scan, and a tire-depth measurement; if those three light up, walk or slash the price hard enough to cover fresh rubber and a leak repair. Clean examples exist, but they are the exception—budget for engine work or keep hunting.
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 (53%), oil leaks (53%), fuel trim out of range (48%). Have these checked before buying.
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Should I worry about cleared fault codes?
On 25% 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 40 inspections · updated Aug 12, 2026
