Jeep Wrangler 4.0 sport
Reliability, running costs, and MOT data across 3 years from 366 real MOT tests.
Avg Pass Rate
69%
Total Tests
366
Best Year
1997 (73%)
Years Covered
3
How reliable is the Jeep Wrangler 4.0 sport?
Jeep Wrangler 4.0 sport by Year
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About the Jeep Wrangler 4.0 sport
The Jeep Wrangler 4.0 sport has been tested 366 times in 2024 MOT data across 3 model years (1997 to 1999), with an average pass rate of 69%. That's 13 points below the national average of 82%, so check the year-by-year data carefully before buying. Available as petrol and diesel.
Best and Worst Years
The 1997 model is the most reliable with a 73% pass rate from 105 tests. The 1998 model has the lowest at 66%. The 7 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Older JEEP WRANGLER 4.0 SPORTs tend to have better MOT pass rates than newer ones, with an average decline of 7 percentage points across model years.
Mileage Across Years
The oldest model in our data (1997) averages 85,533 miles, while the newest (1999) averages 77,828 miles.
Compared to the Jeep brand average of 78%, the Wrangler 4.0 sport is 9 points lower, placing it among the less reliable Jeep models.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.