At a Glance
The Hummer H3 has 2 identified common problems across 1 generation, with the H3 (2005-2010) being the most affected generation and brakes the most common problem category. Based on 2K 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 H3 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 H3 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.
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Tell Us About Your Problem
Help other Hummer H3 owners — report a problem and we'll add it to the database
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Browse Hummer H3 Generations
Select a generation to see its specific problems, MOT failures and advisories
Most Common Hummer H3 MOT Failures
Every reason Hummer H3 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 | Number plate lamp not working | 7.54% |
| 2 | Stop lamp not working | 7.39% |
| 3 | Front lamp not working | 6.53% |
| 4 | Wiper blades deteriorated | 5.67% |
| 5 | Suspension joint or bush worn | 4.81% |
| 6 | Position lamp not working | 4.45% |
| 7 | Indicator fault | 4.16% |
| 8 | Fog lamp not working | 3.80% |
| 9 | Rear fog lamp not working | 3.52% |
| 10 | Brake pads or linings worn | 3.23% |
| 11 | Spark ignition emissions above threshold | 3.16% |
| 12 | Brake performance below minimum | 2.87% |
| 13 | Steering rack fault | 2.51% |
| 14 | Headlamp fault | 2.44% |
| 15 | Headlamp aim defect | 2.44% |
| 16 | Brake disc or drum worn | 2.08% |
| 17 | Parking brake performance below minimum | 2.08% |
| 18 | Windscreen washer not working | 2.01% |
| 19 | Tyre condition | 1.94% |
| 20 | Driveshaft fault | 1.79% |
| 21 | Windscreen damage affecting view | 1.58% |
| 22 | Battery loose or leaking | 1.51% |
| 23 | Exhaust system fault | 1.51% |
| 24 | Catalytic converter efficiency low | 1.36% |
| 25 | Tyre tread depth below limit | 1.36% |
| 26 | Ball joint dust cover split | 1.29% |
| 27 | Electronic stability control fault | 1.15% |
| 28 | Front suspension joint worn | 1.15% |
| 29 | Airbag warning light on | 1.08% |
| 30 | Wheel bearing worn | 1.08% |
| 31 | Mirror damaged or missing | 0.93% |
| 32 | Rear lamp not working | 0.93% |
| 33 | ABS fault | 0.72% |
| 34 | Horn not working | 0.72% |
| 35 | Front suspension fault | 0.65% |
| 36 | Shock absorber worn or leaking | 0.65% |
| 37 | Brake hydraulic component worn | 0.57% |
| 38 | Leaf spring broken or corroded | 0.57% |
| 39 | Parking brake condition | 0.57% |
| 40 | Suspension linkage fault | 0.43% |
| 41 | Flexible brake hose damaged | 0.36% |
| 42 | Bonnet catch or hinge fault | 0.29% |
| 43 | Chassis condition | 0.29% |
| 44 | Dashboard warning lamp fault | 0.29% |
| 45 | Electrical wiring fault | 0.29% |
| 46 | Seat belt condition | 0.29% |
| 47 | Track rod end worn | 0.29% |
| 48 | Brake caliper fault | 0.22% |
| 49 | Brake lever fault | 0.22% |
| 50 | Front passenger door fault | 0.22% |
| 51 | Handbrake lever fault | 0.22% |
| 52 | Brake fluid leak | 0.14% |
| 53 | Compression ignition emissions above threshold | 0.14% |
| 54 | Engine mounting worn or broken | 0.14% |
| 55 | Propshaft fault | 0.14% |
| 56 | Steering arm worn | 0.14% |
| 57 | Steering operation fault | 0.14% |
| 58 | Torsion bar worn or corroded | 0.14% |
| 59 | Vehicle structure corrosion | 0.14% |
| 60 | Brake cable, rod, lever or linkage fault | 0.07% |
| 61 | Brake fluid level low or contaminated | 0.07% |
| 62 | Brake stationary pin worn | 0.07% |
| 63 | Drag link end worn | 0.07% |
| 64 | Driver airbag fault | 0.07% |
| 65 | Driver seat fault | 0.07% |
| 66 | Electrical switch fault | 0.07% |
| 67 | Engine oil leak | 0.07% |
| 68 | Fuel pipe corroded or damaged | 0.07% |
| 69 | Handbrake cable fault | 0.07% |
| 70 | Mirror or camera fault | 0.07% |
| 71 | Outline marker lamp not working | 0.07% |
| 72 | Power steering pipe or hose leaking | 0.07% |
| 73 | Rear reflector damaged or missing | 0.07% |
| 74 | Reversing lamp not working | 0.07% |
| 75 | Rigid brake pipe corroded or damaged | 0.07% |
| 76 | Tyre size or type not matched | 0.07% |
| 77 | Tyre valve stem damaged | 0.07% |
| 78 | Undertray damaged or missing | 0.07% |
| 79 | Universal joint worn | 0.07% |
| 80 | Speed limiter fault | 0.07% |
| 81 | Steering coupling worn | 0.07% |
| 82 | Suspension mounting corroded | 0.07% |
Showing all 82 reasons — scroll inside the table for the full list.
Hummer H3 MOT Failures by Category
Total MOT failure occurrences for the Hummer H3, 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 H3 problems?
Based on analysis of 2K Hummer H3 MOT tests from DVSA data, we have 2 identified common problems across 1 generation. The most frequently flagged issue is "Fog lamp not working". Brakes is the most common problem category.
Which Hummer H3 generation has the most problems?
The Hummer H3 H3 (2005-2010) (2005–2010) has the highest number of identified common problems (2). Click the generation card above for the full breakdown.
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 H3?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Hummer H3 owners spot problems early. All submissions are reviewed before being added to the public database.
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