Isuzu Trucks Grafter vs Isuzu Bighorn: MOT reliability compared
Updated 05 September 2026.
23.0%
Isuzu Trucks Grafter MOT failure rate, 7.3 pts lower than Isuzu Bighorn
Isuzu Trucks Grafter is the more reliable MOT performer: 23.0% of Isuzu Trucks Grafter MOTs fail versus 30.3% for Isuzu Bighorn, a 7.3 point gap.
| Metric | Isuzu Trucks Grafter | Isuzu Bighorn |
|---|---|---|
| MOT failure rate | 23.0% | 30.3% |
| Tests analysed | 37,787 | 18,338 |
| Most common failure | Lamps & electrical (45.7%) | Lamps & electrical (42.0%) |
Questions and answers
Which is more reliable, Isuzu Trucks Grafter or Isuzu Bighorn?
Isuzu Trucks Grafter is the more reliable MOT performer: 23.0% of Isuzu Trucks Grafter MOTs fail versus 30.3% for Isuzu Bighorn, a 7.3 point gap.
What is the MOT failure rate of the Isuzu Trucks Grafter?
23.0% of Isuzu Trucks Grafter MOT tests result in a failure, from 37,787 tests.
What is the MOT failure rate of the Isuzu Bighorn?
30.3% of Isuzu Bighorn MOT tests result in a failure, from 18,338 tests.