Gearbox whine
Whine in certain gears can be bearings, low fluid, or diff issues. Catch it early to avoid big bills.
MED RISK
Common symptoms
- Whine in 3rd/4th/5th
- Noise changes with load
- Vibration through shifter
- Possible leaks
Cost expectations
DIY: £0–£80. Garage: £150–£1200+.
Note: prices vary by car and region. Use this as a planning range.
Most likely causes (ranked)
- Low gearbox oil — Leaks or never serviced.
- Bearing wear — Input/output bearings whine.
- Differential wear — Whine that changes on/off throttle.
- Clutch release bearing — Noise when pedal pressed.
- Wheel bearing — Can mimic gearbox noise.
Quick checks (fast, low-cost)
- Check gearbox oil level and look for leaks.
- Note if noise changes when clutch pressed.
- Test if noise changes on left/right load (wheel bearing clue).
- Inspect driveshaft joints and mounts.
- If metal in oil, stop driving and investigate.
Recommended tools
These tools make diagnosis faster and stop you buying random parts.
Related fixes
If your symptoms don’t match perfectly, check these next.
What to do next
- Check oil first (cheap).
- Don’t ignore growing whine — repairs get expensive.
- Confirm wheel bearings before gearbox work.
AutoSolveHub helps you narrow possibilities. Always confirm critical repairs with proper testing and safe procedures.