Is the Lexus IS reliable?
54% of the 39 we inspected scored 60/100 or higher, with an average of 59/100 — it scores a little below average.
39
Cars inspectedreal pre-purchase inspections59/100
Average conditionall cars we check: 61/10054%
In good shape (60+)all cars we check: 53%Across 39 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
54%
Oil leaks · Engine
51%
Fuel trim out of range · Engine
49%
Active error codes · Electronic equipment
36%
Leaking or worn shock absorbers · Suspension
28%
Share of inspected Lexus ISs where each item was flagged.
How they score
Excellent 10%
Good 44%
Mediocre 36%
Poor 10%
Hidden history
What the seller might not mention — how often we find it on this model.
87%had a repainted or replaced panelall cars: 75%
3%showed structural repairall cars: 4%
26%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
25 cars · 72% good
RX
72 cars · 63% good
ES
48 cars · 39% good
LS
27 cars · 34% good
GX
26 cars · 31% good
Other Lexus models we've inspected — or see the full Lexus profile.
Straight from recent Lexus IS reports
2017 Lexus IS · 99k mi — flagged: low coolant / cooling system issues, oil leaks, battery condition. Inspected Jul 17.
2022 Lexus IS · 52k mi — flagged: battery condition, fuel trim out of range, vibration. Inspected Jul 14.
The bottom line
The Lexus IS market is flooded with cars that look sharper than they run, thanks to repainted panels on 87 percent of them paired with engine issues that dominate the fault list. Prioritize a careful check for oil leaks and fuel-trim problems right away, then move to tire wear and those leaking shocks before you even talk money. Active codes are common enough that a full diagnostic scan is non-negotiable. Use the cosmetic cover-ups as hard leverage to negotiate or walk away from any example that already shows multiple of these weak spots.
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 (54%), oil leaks (51%), fuel trim out of range (49%). 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 39 inspections · updated Aug 1, 2026
