Reliability Report · Multi-Source Data

Lexus Is Reliability

The Lexus Is (current generation) doesn't yet have external composite reliability data in our index. The risk picture below is built from documented owner-reported issues and workshop bulletins. The most-flagged failure mode is cooling fan resistor failure, typically surfacing between 90,000 and 200,000 km. Workshop repair runs €200–€500.

Composite Score
No external reliability reports yet for this model. See documented issues below.
Market Snapshot
Documented issues1
Listings in catalogue0
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Reliability by Source

Each independent organization measures reliability differently. TÜV reports inspection defect rates by age band. ADAC reports pan-European breakdowns per 1,000 vehicles. NHTSA aggregates US consumer complaints. DVSA MOT data is the UK fleet's annual safety inspection — every car 3+ years old. Lower variance across sources = higher confidence in the composite.

NHTSA (US Complaints)
Model years 2013–2022 · 2026 report · n=16
16 complaints across 3 sampled year(s); resolved model="IS"
View source ↗
96
/ 100
DVSA MOT (UK Inspections)
Model years 2010–2021 · 2024 report · n=18826
18,826 UK MOT tests · overall 9.3% fail rate vs UK fleet baseline
View source ↗
92
/ 100
DVSA MOT (UK Inspections)
Model years 2009–2020 · 2023 report · n=12784
12,784 UK MOT tests · overall 9.0% fail rate vs UK fleet baseline
View source ↗
89
/ 100

UK MOT Reliability Detail

Based on 18,826 MOT tests in the UK during the 2024 reporting period. Score for each age band reflects this model's fail rate vs the UK-fleet baseline fail rate at the same age — a generation-aware metric.

Age 3–5 yrs
85
6.8% fail vs 10.9% fleet
2,506 tests
Age 6–9 yrs
92
8.6% fail vs 19.2% fleet
11,412 tests
Age 10–14 yrs
95
11.9% fail vs 32.1% fleet
4,908 tests

Most Common MOT Failure Categories

#1
Condition
1,242
38.0%
#2
Wipers
570
17.4%
#3
Windscreen
513
15.7%
#4
Headlamp
492
15.0%
#5
Tread depth
454
13.9%

Categories ranked across all MOT tests of this model in the UK during the 2024 period. "Condition" covers cosmetic / wear issues; suspension and braking dominate the rest.

Known Issues

Specific failure modes documented across European workshops, owner forums, and TSBs. Costs in EUR (and USD reference) reflect typical retail European labor + parts ranges — specialist shops at the low end, dealer pricing at the high end.

Cooling fan resistor failure
Typical at 90,000–200,000 km
XE30 IS200t / IS300h cooling fan low-speed resistor fails; high-speed-only fan works but causes overheat in traffic.
€200–€500low

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