Most Reliable Isuzu Models: Real MOT Data Analysis
We analysed 43,364 real UK MOT tests to reveal which Isuzu models pass most often, which years to buy, and which to avoid entirely.
43,364 MOT tests analysed
Real DVSA data covering every Isuzu model from 1994-2022
Key Findings
Most Reliable Model
Isuzu D-MAX
72.0% pass rate
Best Single Year
RODEO 2007 Diesel
55.4% pass rate
Isuzu vs National Average
68.2% vs 71.4%
-3.3% below average
Proven Durability Champion
TROOPER
+7.2% at 18-20 years
Isuzu ranks #145 out of 180 manufacturers, below the national average. We analysed 43,364 real MOT tests from the DVSA database to find the most reliable Isuzu models and which years to avoid.
This isn't survey data or owner opinions. These are actual pass/fail results from UK garages, covering Isuzu models sold in the UK from 2000 to 2023.
How Isuzu Compares to Rivals
Isuzu ranks #145 out of 180 manufacturers with a 68.2% average MOT pass rate. That's below the national average of 71.4%:
| Manufacturer | Pass Rate | Rank | Tests Analysed |
|---|---|---|---|
| Toyota | 73.8% | #115 | 1,637,457 |
| Volkswagen | 71.9% | #129 | 3,034,850 |
| Nissan | 68.6% | #142 | 1,626,183 |
| Ford | 68.5% | #143 | 4,473,074 |
| Isuzu | 68.2% | #145 | 43,364 |
| Vauxhall | 65.4% | #155 | 3,052,659 |
The verdict: Toyota maintains a lead among competitors, while Isuzu sits at #145.
Best Isuzu Models by MOT Pass Rate
Looking at overall reliability across all years, here's how Isuzu's core models rank against the 71.4% national average:
| Model | Pass Rate | vs National (71.4%) | Tests | Years |
|---|---|---|---|---|
| D-MAX | 72.0% | +0.5% | 32,056 | 2004-2022 |
| TF | 55.9% | -15.5% | 1,965 | 1998-2016 |
| RODEO | 54.3% | -17.2% | 5,671 | 1994-2015 |
* 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.
Proven Durability Champions: Which Isuzu Models Age Best?
Here's how Isuzu models have performed over 11+ years of real-world MOT testing, compared against 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 |
|---|---|---|---|---|---|
| TROOPER | - | All | +7.2% | 18-20 years | 63.3% |
| TROOPER | - | All | +1.4% | 21+ years | 62.4% |
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.
Isuzu D-MAX: Year-by-Year Breakdown
The D-MAX has 32,056 tests in our database with an overall 72.0% pass rate:
| Year | Fuel | Pass Rate | vs Same-Year Avg | Tests |
|---|---|---|---|---|
| 2020 | Diesel | 81.3% | -6.3% | 2,490 |
| 2019 | Diesel | 80.0% | -6.2% | 3,867 |
| 2018 | Diesel | 77.3% | -6.9% | 3,938 |
| 2017 | Diesel | 73.3% | -8.4% | 4,402 |
| 2016 | Diesel | 69.6% | -9.1% | 4,396 |
| 2015 | Diesel | 70.0% | -5.4% | 4,710 |
| 2014 | Diesel | 65.6% | -6.1% | 4,040 |
| 2013 | Diesel | 63.5% | -4.8% | 2,865 |
| 2012 | Diesel | 63.4% | -2.2% | 1,251 |
D-MAX verdict:
Isuzu Hybrids vs Petrol vs Diesel
Here's how Isuzu's fuel types compare:
| Fuel Type | Average Pass Rate | vs National | Tests |
|---|---|---|---|
| Diesel | 68.2% | -3.3% | 43,100 |
| Petrol | 65.7% | -5.8% | 262 |
Isuzu Models to Avoid
Not all Isuzus are reliable. These specific model/year combinations have failure rates well above average:
| Model | Year | Fuel | Pass Rate | Tests |
|---|---|---|---|---|
| RODEO | 2009 | Diesel | 47.4% | 559 |
| D-MAX | 2013 | Diesel | 59.0% | 553 |
| RODEO | 2010 | Diesel | 52.6% | 970 |
| TF | 2011 | Diesel | 55.3% | 799 |
| RODEO | 2011 | Diesel | 58.2% | 737 |
| RODEO | 2008 | Diesel | 53.8% | 561 |
| RODEO | 2005 | Diesel | 53.3% | 598 |
| RODEO | 2006 | Diesel | 53.4% | 637 |
| RODEO | 2007 | Diesel | 55.4% | 636 |
Pattern to avoid
Early 2005-2011 diesel RODEOs are the models that drag down Isuzu's average. The RODEO performs 10% worse than the average car of the same age at 11-14 years - this is proven poor durability. These vehicles fail MOTs more often than they pass.
What Goes Wrong on Isuzus?
When Isuzus fail MOTs, these are the most common causes:
| Failure Category | Total Failures |
|---|---|
| 1. Lamps, reflectors and electrical equipment | 6,619 |
| 2. Suspension | 5,068 |
| 3. Brakes | 4,461 |
| 4. Body, chassis, structure | 3,020 |
| 5. Visibility | 2,615 |
| 6. Tyres | 1,485 |
| 7. Noise, emissions and leaks | 1,418 |
Pre-MOT checklist for Isuzu owners:
- Check all bulbs (number plate lights are commonly missed)
- Inspect suspension bushes and anti-roll bar links
- Check brake pad thickness and disc condition
- Clean windscreen and check wiper blade condition
Frequently Asked Questions
Our Buying Recommendations
Best If Buying Nearly New
2019-2023 models with highest early pass rates
- Limited data for recent models
Note: Long-term durability not yet proven for these newer models
Best If Buying Used (Proven)
11+ years of proven durability data
- TROOPER (18-20 years): +4% vs same-age (proven at 11+ years)
Isuzu Models to Avoid (Proven Poor)
Proven below average at 11+ years - not just old, genuinely problematic
- RODEO (11-14 years): -7% vs same-age (proven poor at 11+ years) (Below average at 11-14 years)
- TF (11-14 years): -9% vs same-age (proven poor at 11+ years) (Below average at 11-14 years)
About This Data
This analysis uses real MOT test results from the DVSA database, covering 43,364 tests on Isuzu 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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