At a Glance
The London Taxis Int Tx4 has 62 identified common problems across 1 generation (2007–2017), with the TX4 (2007-2017) being the most affected generation and suspension the most common problem category. Based on 233K 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 London Taxis Int Tx4 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
London Taxis Int Tx4 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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Browse London Taxis Int Tx4 Generations
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Most Common London Taxis Int Tx4 MOT Failures
Every reason London Taxis Int Tx4 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 | Suspension joint or bush worn | 12.77% |
| 2 | Tyre tread depth below limit | 9.68% |
| 3 | Brake performance below minimum | 6.75% |
| 4 | Windscreen washer not working | 6.21% |
| 5 | Wiper blades deteriorated | 6.14% |
| 6 | Position lamp not working | 4.58% |
| 7 | Front lamp not working | 4.30% |
| 8 | Stop lamp not working | 3.90% |
| 9 | Brake pads or linings worn | 3.39% |
| 10 | Coil spring broken or corroded | 3.01% |
| 11 | Headlamp aim defect | 2.77% |
| 12 | Number plate lamp not working | 2.56% |
| 13 | Track rod end worn | 2.42% |
| 14 | Parking brake performance below minimum | 2.39% |
| 15 | Front suspension fault | 1.95% |
| 16 | Brake disc or drum worn | 1.62% |
| 17 | Headlamp fault | 1.60% |
| 18 | Spark ignition emissions above threshold | 1.37% |
| 19 | Rigid brake pipe corroded or damaged | 1.31% |
| 20 | Windscreen damage affecting view | 1.31% |
| 21 | Engine oil leak | 1.30% |
| 22 | Ball joint dust cover split | 1.07% |
| 23 | Parking brake condition | 0.99% |
| 24 | Tyre condition | 0.78% |
| 25 | ABS fault | 0.78% |
| 26 | Seat belt condition | 0.74% |
| 27 | Exhaust system fault | 0.70% |
| 28 | Wheel bearing worn | 0.68% |
| 29 | Rear fog lamp not working | 0.63% |
| 30 | Rear lamp not working | 0.63% |
| 31 | Shock absorber worn or leaking | 0.61% |
| 32 | Compression ignition emissions above threshold | 0.60% |
| 33 | Fog lamp not working | 0.54% |
| 34 | Body corrosion or damage | 0.49% |
| 35 | Chassis condition | 0.48% |
| 36 | Battery loose or leaking | 0.42% |
| 37 | Vehicle structure corrosion | 0.41% |
| 38 | Horn not working | 0.41% |
| 39 | Mirror damaged or missing | 0.38% |
| 40 | Transmission oil leak | 0.36% |
| 41 | Flexible brake hose damaged | 0.33% |
| 42 | Brake lever fault | 0.33% |
| 43 | Suspension mounting corroded | 0.23% |
| 44 | Indicator fault | 0.23% |
| 45 | Handbrake cable fault | 0.23% |
| 46 | Brake hydraulic component worn | 0.23% |
| 47 | Brake fluid level low or contaminated | 0.21% |
| 48 | Power steering pipe or hose leaking | 0.21% |
| 49 | Suspension linkage fault | 0.20% |
| 50 | Handbrake lever fault | 0.18% |
| 51 | Bumper damaged or insecure | 0.17% |
| 52 | Propshaft fault | 0.15% |
| 53 | Steering box fault | 0.15% |
| 54 | Steering arm worn | 0.14% |
| 55 | Headlamp levelling device fault | 0.13% |
| 56 | Exhaust leak | 0.13% |
| 57 | Suspension arm worn or corroded | 0.12% |
| 58 | Brake servo fault | 0.12% |
| 59 | Anti-roll bar worn or corroded | 0.12% |
| 60 | Steering column fault | 0.11% |
| 61 | Brake fluid leak | 0.11% |
| 62 | Bonnet catch or hinge fault | 0.11% |
| 63 | Electrical wiring fault | 0.11% |
| 64 | Steering lock fault | 0.11% |
| 65 | Rear reflector damaged or missing | 0.10% |
| 66 | Airbag warning light on | 0.09% |
| 67 | Brake wheel cylinder fault | 0.09% |
| 68 | Electrical switch fault | 0.09% |
| 69 | Brake caliper fault | 0.08% |
| 70 | Drag link end worn | 0.08% |
| 71 | Front suspension joint worn | 0.07% |
| 72 | Passenger seat fault | 0.07% |
| 73 | Reversing lamp not working | 0.06% |
| 74 | Hydraulic brake cylinder fault | 0.06% |
| 75 | Steering wheel damaged or insecure | 0.06% |
| 76 | Axle corroded or damaged | 0.06% |
| 77 | Front passenger door fault | 0.06% |
| 78 | Fuel hose damaged or leaking | 0.06% |
| 79 | Subframe corrosion or damage | 0.06% |
| 80 | Boot lid damaged or insecure | 0.06% |
| 81 | Engine mounting worn or broken | 0.06% |
| 82 | Steering intermediate drop arm worn | 0.06% |
| 83 | Brake pedal fault | 0.05% |
| 84 | Tyre pressure monitoring system fault | 0.05% |
| 85 | Driver seat fault | 0.05% |
| 86 | Fuel tank corroded or leaking | 0.05% |
| 87 | Fuel cap damaged or missing | 0.05% |
| 88 | Brake pedal movement restricted | 0.05% |
| 89 | Fuel pipe corroded or damaged | 0.05% |
| 90 | Electronic stability control fault | 0.05% |
| 91 | Dashboard warning lamp fault | 0.04% |
| 92 | King pin or swivel pin worn | 0.04% |
| 93 | Universal joint worn | 0.04% |
| 94 | Driver door fault | 0.04% |
| 95 | Steering operation fault | 0.04% |
| 96 | Brake fluid reservoir fault | 0.04% |
| 97 | Brake valve fault | 0.04% |
| 98 | Power steering pump fault | 0.04% |
| 99 | Speedometer fault | 0.04% |
| 100 | Axle beam corroded or cracked | 0.03% |
| 101 | Body security fault | 0.03% |
| 102 | Brake fluid warning light on | 0.03% |
| 103 | Steering lock stop fault | 0.03% |
| 104 | Trailing arm worn or corroded | 0.03% |
| 105 | Front fog lamp not working | 0.03% |
| 106 | Steering coupling worn | 0.03% |
| 107 | Hydraulic fluid leak | 0.03% |
| 108 | Steering rack fault | 0.03% |
| 109 | Rear suspension fault | 0.02% |
| 110 | Tyre size or type not matched | 0.02% |
| 111 | Brake air or vacuum system fault | 0.02% |
| 112 | Brake master cylinder fault | 0.02% |
| 113 | Suspension retaining or locking device fault | 0.02% |
| 114 | Suspension rod worn or corroded | 0.02% |
| 115 | Steering damper fault | 0.02% |
| 116 | Dip switch fault | 0.02% |
| 117 | Driveshaft fault | 0.02% |
| 118 | Steering free play excessive | 0.02% |
| 119 | Vehicle floor corroded | 0.02% |
| 120 | Catalytic converter efficiency low | 0.02% |
| 121 | Leaf spring broken or corroded | 0.01% |
| 122 | Electronic braking system fault | 0.01% |
| 123 | Steering shaft fault | 0.01% |
| 124 | Main beam warning light fault | 0.01% |
| 125 | Rear fog lamp warning light fault | 0.01% |
| 126 | Access panel damaged or insecure | 0.01% |
| 127 | Power steering ram fault | 0.01% |
| 128 | Suspension linkage attachment bracket or mounting corroded | 0.01% |
| 129 | Tyre valve stem damaged | 0.01% |
| 130 | Additional braking device fault | 0.01% |
| 131 | Brake pressure or vacuum buildup insufficient | 0.01% |
| 132 | Window damaged or won't operate | 0.01% |
| 133 | Body strengthening plate corroded | 0.01% |
| 134 | Spring mounting corroded | 0.01% |
| 135 | Brake pedal linkage fault | <0.01% |
| 136 | Mirror or camera fault | <0.01% |
| 137 | Brake cable, rod, lever or linkage fault | <0.01% |
| 138 | Indicator warning light fault | <0.01% |
| 139 | Seat belt anchorage fault | <0.01% |
| 140 | Seat belt or padding damaged | <0.01% |
| 141 | Brake clevis joint worn | <0.01% |
| 142 | Driver airbag fault | <0.01% |
| 143 | Panhard rod worn or corroded | <0.01% |
| 144 | Wheel hub fault | <0.01% |
| 145 | Radius arm worn or corroded | <0.01% |
| 146 | Semaphore indicator fault | <0.01% |
| 147 | Undertray damaged or missing | <0.01% |
| 148 | Outline marker lamp not working | <0.01% |
| 149 | Suspension unit fault | <0.01% |
| 150 | Electronic parking brake fault | <0.01% |
| 151 | Halfshaft fault | <0.01% |
| 152 | Leaf spring eye worn or broken | <0.01% |
| 153 | Securing bolts missing or insecure | <0.01% |
| 154 | Bonded suspension condition | <0.01% |
| 155 | MacPherson strut worn | <0.01% |
| 156 | Brake slack adjuster fault | <0.01% |
| 157 | Exhaust heat shield or sound insulation damaged | <0.01% |
| 158 | Hazard warning light fault | <0.01% |
| 159 | Spare wheel fault | <0.01% |
| 160 | Subframe mounting corroded | <0.01% |
| 161 | Tie bar or rod worn or corroded | <0.01% |
| 162 | Air brake cylinder or actuator fault | <0.01% |
| 163 | Hand-operated brake valve condition | <0.01% |
| 164 | Seat belt pre-tensioner fault | <0.01% |
| 165 | Stub axle worn | <0.01% |
| 166 | Tailgate damaged or insecure | <0.01% |
| 167 | Torsion bar worn or corroded | <0.01% |
| 168 | Brake master cylinder or servo mounting fault | <0.01% |
| 169 | Cab corrosion or damage | <0.01% |
| 170 | Electric power steering fault | <0.01% |
| 171 | Full power hydraulic brake fault | <0.01% |
| 172 | Leaf spring slipper worn | <0.01% |
| 173 | Loading door damaged or insecure | <0.01% |
| 174 | Steering drive system fault | <0.01% |
| 175 | Steering head bearings worn | <0.01% |
| 176 | Speed limiter fault | <0.01% |
Showing all 176 reasons — scroll inside the table for the full list.
London Taxis Int Tx4 MOT Failures by Category
Total MOT failure occurrences for the London Taxis Int Tx4, 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 London Taxis Int Tx4 problems?
Based on analysis of 233K London Taxis Int Tx4 MOT tests from DVSA data, we have 62 identified common problems across 1 generation. The most frequently flagged issue is "Suspension pins, bushes or ball joints worn". Suspension is the most common problem category.
Which London Taxis Int Tx4 generation has the most problems?
The London Taxis Int Tx4 TX4 (2007-2017) (2006–2017) has the highest number of identified common problems (82). 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 London Taxis Int Tx4?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other London Taxis Int Tx4 owners spot problems early. All submissions are reviewed before being added to the public database.
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