MOT failure · RFR #32056
Tyre obviously under inflated
Total
444
Models
70
Models most at risk.
Ranked by rate, not raw volume. A Fiesta shows every failure a lot because there are a lot of Fiestas. Rate = share of that model's own MOTs.
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- 01 Isuzu Trucks Grafter N35.125 1.32%
- 02 Isuzu Trucks Grafter N35.150 1.10%
- 03 Volvo Xc60 Rdesgn Pro T8 Rchrg Awd A 0.96%
- 04 Mini Cooper Auto 0.80%
- 05 Ford Edge ST Line Ecoblue Auto 0.58%
- 06 Cupra Formentor V2 Tsi 0.51%
- 07 Peugeot 208 GT Line EV 0.51%
- 08 Skoda Octavia SE Tech Tsi IV S A 0.44%
- 09 Mazda 2 Sport Nav Mhev 0.42%
- 10 Land Rover Defender S D Mhev Auto 0.41%
- 11 Tesla Model 3 0.40%
- 12 SEAT Ateca FR Sport Tsi Evo S A 0.36%
- 13 Ford Mustang Mach E Ext Range Awd 0.35%
- 14 Peugeot 2008 GT Premium EV 0.33%
- 15 Suzuki Ignis SZ T Dualjet Shvs 0.30%
- 16 Audi A1 S Line 25 Tfsi S A 0.28%
- 17 Ford Transit 460 Trend Ecoblue 0.28%
- 18 Peugeot 2008 Allure Puretech S/s 0.27%
- 19 Audi A3 S Line 35 Tfsi 0.26%
- 20 BMW X3 M Competition Auto 0.25%
- 21 Audi A4 S Line 35 Tdi Mhev S A 0.25%
- 22 Vauxhall Crossland Elite Nav Turbo Auto 0.25%
- 23 Fiat 500 Launch Edition Mhev 0.24%
- 24 Fiat 500 Rockstar Mhev 0.24%
- 25 SEAT Mii EV 0.23%
- 26 Toyota C HR Orange Edition Hev Cvt 0.23%
- 27 Audi Q3 Sport 35 Tfsi Mhev S A 0.22%
- 28 Vauxhall Crossland X Business ED Nav T 0.22%
- 29 Audi E Tron Sport 50 Quattro 0.22%
- 30 Ford Puma ST Line Vignale Mhev 0.21%
Top 30 by rate. 40 more models also logged this defect.
Cost orientation
Hard to predict in isolation — depends what's actually worn.
This defect doesn't map to a clean retail-part swap; ranges vary too widely without seeing the car. Use the estimator to bracket the all-in cost across the items most likely to surface alongside it.
Frequently asked.
- Why does tyre obviously under inflated fail an MOT?
- Tyre obviously under inflated. Most commonly flagged on the Isuzu Trucks Grafter N35.125. UK MOT standards require this item to meet minimum safety thresholds — when it falls short, the tester logs it as a Major or Dangerous defect and the car fails outright.
- How much does it cost to fix tyre obviously under inflated?
- Costs vary depending on the vehicle, region, and severity. Use our MOT cost estimator for typical UK garage rates across the most common failure items.
Real examples from owners.
Owner reports sourced from honestjohn.co.uk that mention keywords from this failure. Matched, not summarised.
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