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What 7 owners told NHTSA about the 2021 Mini Hardtop 4dr
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
1 of 7 complaints match · Tires · clear filters
Aug 22, 2022Tires
Tire model is: Hankook Ventus S1 Evo Z 225/35R18 87Y. Failure started when vehicle turned the "CHECK TIRE PRESSURE" alert on while driving. Pressure started to drop from 32 lbs to 16 lbs in about 15 minutes. Worth to note: no pot hole or any other object was hit during the day of the incident; or even previous days. After stopping, I noticed that the failure occurred in the inner face of the tire. Inner face was pretty degraded and inner treads were visible. A 15 inch long breakage line was visible. Car has 18k miles on it. When comparing the tire that failed to the rest, its degradation was much higher.
NHTSA ODI 11480654
Working with the data? Download all 7 complaints as CSV · fetched from NHTSA July 18, 2026
How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your
pre-purchase inspection list. Back to the
full 2021 Mini Hardtop 4dr verdict →