Jeep Wrangler 4.0 sport

About the Jeep Wrangler 4.0 sport

The Jeep Wrangler 4.0 sport has been tested 366 times in 2026 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.