Gearbox problems
Crunching, refusal to engage, jumping out of gear, or an automatic hesitating and thumping — gearbox symptoms are specific, and describing them exactly is half the diagnosis.
What you might be seeing
- Crunch into certain gears (worn synchros)
- Jumps out of gear on the move
- Automatic slow to engage D/R, flaring between shifts
- Whine that changes with road speed
The likely causes, honestly ranked
- Low or aged gearbox oil
- Worn synchromesh or selector linkage
- Automatic/DSG clutch packs or mechatronics
- Bearing wear (the whine)
Do this now
- Check for leaks under where you park
- Note which gears and when — cold only, hot only, always
- Ask a local garage whether a fluid service is a sensible first step for your box — on many automatics it genuinely is
What to avoid
- Forcing gears with the revs up
- Ignoring an automatic’s hesitation until it stops engaging entirely — early attention is dramatically cheaper
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Frequently asked questions
Do automatics need gearbox servicing?
Many do, whatever the brochure implied — fluid and filter at sensible intervals extends the life of conventional autos and DSGs alike. Ask what your model needs.
Why does my manual crunch into second?
Second’s synchro works hardest and wears first. Fresh oil sometimes helps; persistent crunching is mechanical wear a garage should assess.
Is a whine that rises with speed the gearbox?
If it tracks road speed (not revs) it may be a wheel bearing; if it tracks gear and load, the box. A road test with someone who knows the difference settles it.
Written and reviewed by the Escargo team · Updated 9 August 2026 · Escargo shows real local businesses only — where none is listed yet, the page says so honestly.