NHTSA — Power Train: Driveline: Differential Unit Problems

2.3

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
67,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

1999 Mercury Mountaineer drivetrain problems

drivetrain problem

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1999 Mercury Mountaineer Owner Comments

problem #1

Apr 082005

Mountaineer 8-cyl

  • Automatic transmission
  • 67,000 miles

A D V E R T I S E M E N T S

1999 Mercury Mountaineer. Leak in rear differential at 40,000 miles. Replaced pinion seal. At 67,000 miles, a loud, whine emitted from rear axle when driving (regardless of speed) and the mechanic advises us to replace rear differential bearings or entire rear differential. If we don't, we fear the rear axle will fail, causing a crash.

- Santa Ana, CA, USA

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