At a Glance
The Hummer H1 has 0 identified common problems across 2 generations (1992–2006) and brakes the most common problem category. Based on 229 MOT tests from DVSA data.
Problems are patterns in the DVSA data that occur significantly more often on a specific model than the UK average — confirmed at 99% statistical confidence. Read our DVSA MOT data methodology →
Below: generation-by-generation comparison of Hummer H1 common problems, MOT failure types, and pass-rate data drawn from DVSA records. Click any generation to see fuel- and engine-specific fault patterns, mileage-banded repair guidance, and the most common MOT failures testers record.
MOT Tests & Failures by Generation
Hummer H1 generations by MOT tests, failures, and identified problems from DVSA data
Hover over each bar for a full breakdown. Tap any bar to view that generation's problems.
Showing total MOT tests, failures, and known problems per make. Hover over each bar for a full breakdown.
Tell Us About Your Problem
Help other Hummer H1 owners — report a problem and we'll add it to the database
Tell Us About Your Problem
Help other Hummer H1 owners — report a problem and we'll add it to the database
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Browse Hummer H1 Generations
Select a generation to see its specific problems, MOT failures and advisories
Most Common Hummer H1 MOT Failures
Every reason Hummer H1 vehicles fail their MOT, ranked by frequency. Select an individual year to see only that year’s failures, or stay on ‘All time’ for the combined picture across our 20 years of DVSA data. Scroll inside the table for the full list.
| # | Failure | % of failures |
|---|---|---|
| 1 | Brake performance below minimum | 12.20% |
| 2 | Indicator fault | 12.20% |
| 3 | Wiper blades deteriorated | 10.57% |
| 4 | Number plate lamp not working | 6.50% |
| 5 | Fog lamp not working | 4.88% |
| 6 | Track rod end worn | 4.88% |
| 7 | Windscreen washer not working | 4.88% |
| 8 | Suspension joint or bush worn | 3.25% |
| 9 | Battery loose or leaking | 2.44% |
| 10 | Brake caliper fault | 2.44% |
| 11 | Brake disc or drum worn | 2.44% |
| 12 | Exhaust system fault | 2.44% |
| 13 | Front suspension joint worn | 2.44% |
| 14 | Stop lamp not working | 2.44% |
| 15 | Tyre condition | 2.44% |
| 16 | ABS fault | 1.63% |
| 17 | Brake hydraulic component worn | 1.63% |
| 18 | Brake pads or linings worn | 1.63% |
| 19 | Driveshaft fault | 1.63% |
| 20 | Headlamp fault | 1.63% |
| 21 | Horn not working | 1.63% |
| 22 | Exhaust emissions above threshold (non-catalyst) | 0.81% |
| 23 | Front lamp not working | 0.81% |
| 24 | Handbrake cable fault | 0.81% |
| 25 | Parking brake condition | 0.81% |
| 26 | Parking brake performance below minimum | 0.81% |
| 27 | Position lamp not working | 0.81% |
| 28 | Power steering pipe or hose leaking | 0.81% |
| 29 | Rear fog lamp not working | 0.81% |
| 30 | Seat belt condition | 0.81% |
| 31 | Spark ignition emissions above threshold | 0.81% |
| 32 | Steering column fault | 0.81% |
| 33 | Steering lock fault | 0.81% |
| 34 | Steering wheel damaged or insecure | 0.81% |
| 35 | Windscreen damage affecting view | 0.81% |
| 36 | Headlamp aim defect | 0.81% |
| 37 | Steering coupling worn | 0.81% |
| 38 | Tyre tread depth below limit | 0.81% |
Showing all 38 reasons — scroll inside the table for the full list.
Hummer H1 MOT Failures by Category
Total MOT failure occurrences for the Hummer H1, grouped by category. Same data as the failures table above — just sliced by category instead of fault title. Hover a slice for the top failures in each category.
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Frequently Asked Questions
What are the most common Hummer H1 problems?
Based on analysis of 229 Hummer H1 MOT tests from DVSA data, we have 0 identified common problems across 2 generations. Brakes is the most common problem category.
Which Hummer H1 generation has the most problems?
We haven't identified significant problem patterns specific to any single generation of the Hummer H1 yet — either this is a well-engineered model across all its generations, or the sample size per generation is still small. Check individual generation pages for MOT failure and advisory breakdowns.
How is this data calculated?
We analyse anonymised DVSA MOT test records under the Open Government Licence. An issue is classified as a "Common Problem" when it occurs significantly more often on a specific model than the UK average, confirmed at 99% statistical confidence. Read the full methodology page for details.
Can I report a problem with my Hummer H1?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Hummer H1 owners spot problems early. All submissions are reviewed before being added to the public database.
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