Most Reliable Lexus Models: Real MOT Data Analysis
We analysed 159,314 real UK MOT tests to reveal which Lexus models pass most often, which years to buy, and which to avoid entirely.
159,314 MOT tests analysed
Real DVSA data covering every Lexus model from 1990-2023
Key Findings
Most Reliable Model
Lexus UX
94.3% pass rate
Best Single Year
RX 450H LUXURY CVT 2013 Hybrid Electric
87.5% pass rate
Lexus vs National Average
83.1% vs 71.4%
+11.7% above average
Proven Durability Champion
GS
+22.6% at 11-14 years
How reliable are Lexuss really? We analysed 159,314 real MOT tests from the DVSA database to find out which Lexus models pass most often and which years are worth buying.
This isn't survey data or owner opinions. These are actual pass/fail results from UK garages, covering Lexus models sold in the UK from 2000 to 2023.
How Lexus Compares to Rivals
Lexus ranks #66 out of 180 manufacturers with a 83.1% average MOT pass rate. That's above the national average of 71.4%:
| Manufacturer | Pass Rate | Rank | Tests Analysed |
|---|---|---|---|
| Lexus | 83.1% | #66 | 159,314 |
| Infiniti | 82.2% | #69 | 10,232 |
| Bmw | 78.3% | #92 | 1,841,164 |
| Jaguar | 78.2% | #93 | 351,545 |
| Audi | 77.8% | #96 | 1,670,675 |
| Mercedes-Benz | 76.8% | #100 | 1,697,161 |
| Volvo | 73.0% | #122 | 570,008 |
The verdict: Lexus leads its competitors with a 83.1% pass rate.
Best Lexus Models by MOT Pass Rate
Looking at overall reliability across all years, here's how Lexus's core models rank against the 71.4% national average:
| Model | Pass Rate | vs National (71.4%) | Tests | Years |
|---|---|---|---|---|
| UX | 94.3% | +22.9% | 7,610 | 2019-2022 |
| ES | 93.5% | +22.1% | 2,206 | 2007-2023 |
| RX | 91.5% | +20.1% | 16,073 | 2004-2022 |
| NX | 91.1% | +19.7% | 24,803 | 2014-2022 |
| GS | 88.7% | +17.2% | 3,593 | 1999-2019 |
| RC | 88.1% | +16.7% | 2,319 | 2014-2020 |
| IS | 86.6% | +15.2% | 16,163 | 2002-2022 |
| CT | 85.2% | +13.7% | 30,955 | 2011-2023 |
| LS430 | 78.1% | +6.6% | 1,176 | 2000-2012 |
| RX450H | 76.9% | +5.5% | 7,066 | 2005-2021 |
* Compared to overall 71.4% national average across all years. For year-adjusted comparisons that account for newer cars passing more often, see individual model breakdowns below.
Top performer
The UX achieves a 94.3% pass rate, 23 percentage points above the national average.
Proven Durability Champions: Which Lexus Models Age Best?
These Lexus models have proven exceptional durability with 11+ years of real-world MOT data. They consistently outperform the national average for cars of the same age:
High-confidence data: Only vehicles with 11+ years of MOT history and 100+ tests are included in this ranking.
| Model | Year | Fuel | vs Same-Age Average | Tested At | Pass Rate |
|---|---|---|---|---|---|
| GS | - | All | +22.6% | 11-14 years | 87.2% |
| LS430 | - | All | +22.5% | 18-20 years | 78.7% |
| RX | - | All | +21.7% | 11-14 years | 86.3% |
| IS | - | All | +20.2% | 11-14 years | 84.8% |
| SC430 | - | All | +19.4% | 18-20 years | 75.5% |
| GS450H | - | All | +18.5% | 15-17 years | 76.3% |
| GS300 | - | All | +16.4% | 15-17 years | 74.3% |
| LS430 | - | All | +16.3% | 21+ years | 77.3% |
| IS250 | - | All | +16.3% | 15-17 years | 74.1% |
| RX450H | - | All | +16.2% | 15-17 years | 74.0% |
How to read this: A score of "+15%" means the model passes MOTs 15 percentage points more often than the average car of the same age. These are proven results from vehicles that have genuinely aged well.
Proven durability champion
The GS outperforms the average 11-14 years-old car by 23 percentage points, with 1,209 MOT tests proving its reliability.
Early Performers: Strong Start, Unproven Durability
These newer Lexus models (3-6 years old) show strong early results, but haven't yet proven long-term durability:
Important caveat: Durability NOT yet proven - too early to assess long-term reliability. Older versions of the same model may tell a different story at 11+ years.
| Model | Year | Fuel | vs Same-Age Average | Tested At | Pass Rate |
|---|---|---|---|---|---|
| RX | - | All | +14.4% | 8-10 years | 89.9% |
| GS | - | All | +13.9% | 8-10 years | 89.3% |
| NX | - | All | +12.8% | 8-10 years | 88.3% |
| IS | - | All | +12.1% | 8-10 years | 87.5% |
| CT | - | All | +11.3% | 8-10 years | 86.8% |
| RC | - | All | +10.8% | 8-10 years | 86.2% |
| RX | - | All | +10.1% | 3-7 years | 94.8% |
| UX | - | All | +9.5% | 3-7 years | 94.3% |
What this means: These models are performing well in their early years, but we recommend checking the Durability Champions section above to see how older versions of the same model family have fared over time.
Lexus CT: Year-by-Year Breakdown
The CT has 30,955 tests in our database with an overall 85.2% pass rate:
| Year | Fuel | Pass Rate | vs Same-Year Avg | Tests |
|---|---|---|---|---|
| 2020 | Hybrid Electric | 94.2% | +6.5% | 1,287 |
| 2019 | Hybrid Electric | 90.9% | +4.7% | 1,939 |
| 2018 | Hybrid Electric | 89.8% | +5.5% | 2,732 |
| 2017 | Hybrid Electric | 88.7% | +7.0% | 2,981 |
| 2016 | Hybrid Electric | 88.9% | +10.3% | 2,985 |
| 2015 | Hybrid Electric | 86.0% | +10.5% | 3,512 |
| 2014 | Hybrid Electric | 85.9% | +14.2% | 3,801 |
| 2013 | Hybrid Electric | 80.2% | +12.0% | 3,640 |
| 2012 | Hybrid Electric | 80.0% | +14.4% | 2,816 |
| 2012 | Other | 79.6% | +14.0% | 619 |
| 2011 | Petrol | 80.9% | +17.9% | 529 |
| 2011 | Other | 78.9% | +15.9% | 705 |
CT verdict: The 2020 hybrid electric model achieves a 94.2% pass rate (23 points above average).
Lexus NX: Year-by-Year Breakdown
The NX has 24,803 tests in our database with an overall 91.1% pass rate:
| Year | Fuel | Pass Rate | vs Same-Year Avg | Tests |
|---|---|---|---|---|
| 2020 | Hybrid Electric | 94.2% | +6.5% | 4,263 |
| 2019 | Hybrid Electric | 93.5% | +7.3% | 4,584 |
| 2018 | Hybrid Electric | 91.5% | +7.2% | 4,462 |
| 2017 | Hybrid Electric | 89.8% | +8.2% | 3,763 |
| 2016 | Hybrid Electric | 88.2% | +9.6% | 3,647 |
| 2015 | Hybrid Electric | 88.5% | +13.1% | 2,968 |
| 2014 | Hybrid Electric | 87.2% | +15.5% | 812 |
NX verdict: The 2020 hybrid electric model achieves a 94.2% pass rate (23 points above average).
Lexus IS: Year-by-Year Breakdown
The IS has 16,163 tests in our database with an overall 86.6% pass rate:
| Year | Fuel | Pass Rate | vs Same-Year Avg | Tests |
|---|---|---|---|---|
| 2020 | Hybrid Electric | 88.7% | +1.0% | 591 |
| 2019 | Hybrid Electric | 89.0% | +2.8% | 1,230 |
| 2018 | Hybrid Electric | 90.1% | +5.9% | 1,456 |
| 2017 | Hybrid Electric | 89.2% | +7.5% | 1,540 |
| 2016 | Hybrid Electric | 88.2% | +9.6% | 1,940 |
| 2015 | Hybrid Electric | 88.1% | +12.6% | 2,706 |
| 2014 | Hybrid Electric | 86.7% | +15.0% | 2,932 |
| 2013 | Hybrid Electric | 85.0% | +16.7% | 1,448 |
IS verdict:
Lexus RX: Year-by-Year Breakdown
The RX has 16,073 tests in our database with an overall 91.5% pass rate:
| Year | Fuel | Pass Rate | vs Same-Year Avg | Tests |
|---|---|---|---|---|
| 2020 | Hybrid Electric | 96.0% | +8.3% | 1,826 |
| 2019 | Hybrid Electric | 94.4% | +8.2% | 2,317 |
| 2018 | Hybrid Electric | 95.2% | +10.9% | 1,842 |
| 2017 | Hybrid Electric | 93.9% | +12.2% | 1,928 |
| 2016 | Hybrid Electric | 92.2% | +13.5% | 2,193 |
| 2015 | Hybrid Electric | 88.3% | +12.8% | 1,272 |
| 2014 | Hybrid Electric | 88.0% | +16.3% | 1,616 |
| 2013 | Hybrid Electric | 86.9% | +18.6% | 1,786 |
| 2012 | Hybrid Electric | 85.6% | +19.9% | 672 |
RX verdict: The 2020 hybrid electric model achieves a 96.0% pass rate (25 points above average).
Lexus Hybrids vs Petrol vs Diesel
Reliability varies by fuel type for Lexus. Here's how each performs:
| Fuel Type | Average Pass Rate | vs National | Tests |
|---|---|---|---|
| Hybrid Electric | 87.2% | +15.8% | 114,709 |
| Other | 79.2% | +7.8% | 1,592 |
| Electric | 79.2% | +7.7% | 1,056 |
| Petrol | 72.9% | +1.4% | 35,007 |
| Diesel | 69.3% | -2.1% | 6,753 |
The hybrid advantage: Lexus hybrids pass MOTs 14% more often than petrols and 18% more often than diesels.
What Goes Wrong on Lexuss?
When Lexuss fail MOTs, these are the most common causes:
| Failure Category | Total Failures |
|---|---|
| 1. Lamps, reflectors and electrical equipment | 10,007 |
| 2. Tyres | 7,852 |
| 3. Brakes | 6,355 |
| 4. Visibility | 4,712 |
| 5. Suspension | 4,645 |
| 6. Noise, emissions and leaks | 2,098 |
| 7. Body, chassis, structure | 1,659 |
Pre-MOT checklist for Lexus owners:
- Check all bulbs (number plate lights are commonly missed)
- Ensure tyres meet 1.6mm tread requirement
- Check brake pad thickness and disc condition
- Clean windscreen and check wiper blade condition
- Inspect suspension bushes and anti-roll bar links
Frequently Asked Questions
Our Buying Recommendations
Best If Buying Nearly New
2019-2023 models with highest early pass rates
- RX 2020 Hybrid Electric: 96% pass rate
- UX 2019 Hybrid Electric: 94% pass rate
- ES 2019 Hybrid Electric: 94% pass rate
- NX 2019 Hybrid Electric: 94% pass rate
Note: Long-term durability not yet proven for these newer models
Best If Buying Used (Proven)
11+ years of proven durability data
- GS (11-14 years): +23% vs same-age (proven at 11+ years)
- LS430 (18-20 years): +19% vs same-age (proven at 11+ years)
- RX (11-14 years): +22% vs same-age (proven at 11+ years)
- IS (11-14 years): +18% vs same-age (proven at 11+ years)
Lexus Models to Avoid (Proven Poor)
Proven below average at 11+ years - not just old, genuinely problematic
- No major proven reliability concerns
About This Data
This analysis uses real MOT test results from the DVSA database, covering 159,314 tests on Lexus vehicles between 2000 and 2023.
Year-Adjusted Scoring (v2.1): In year-by-year breakdowns, each vehicle is compared against the national average for vehicles of the same model year. This removes the natural bias where newer cars pass more often, allowing fair comparisons across eras.
Evidence-Tiered Durability: We separate "proven durability" (vehicles tested at 11+ years old) from "early performers" (3-6 years old). Only vehicles with proven long-term data are used for durability claims. Age-band comparisons use weighted national averages.
Minimum thresholds: 100 tests for proven durability rankings, 100 tests for early performer rankings. Pass rates are calculated as first-time passes, excluding retests.
The overall national average MOT pass rate is 71.44% based on 32,300,000 tests across all manufacturers. Year-specific averages range from ~59% (2009 vehicles) to ~88% (2020 vehicles).
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