M20 / M32 Manual Gearbox Problems
The M20 and M32 Manual 6-speed gearboxes are extremely common failures and are fitted to a variety of vehicles including Vauxhalls, Alfa Romeo’s and Fiats. The most common problem is worn and noisy bearings which cause the gearbox to whine in certain gears. The noisy bearing may be more audible in some gears then others.
A noisy gearbox when treated quickly is not that bad a problem, we can generally re-bearing the box and have you back on the road in no time – but if you ignore a noisy bearing it can very quickly become a big problem.
Common M20 / M32 Manual Gearbox Faults
- Gears Crunching
- Stuck In Gear
- Not Going Into Gear
- Jumping Out of Gear
- Noisy Gearbox (Whining / Grinding)
- Gear Problems When Hot
- Gear Problems When Cold
Although we’ve repaired hundreds of these gearboxes now, there’s many people that are not aware of Gearbox Repairs and will either pay out a lot for a brand new gearbox (which will come with a limited 12 months warranty) or pick up a cheap second-hand used gearbox (which will come with a limited 30-90 days warranty).
Our M20 / M32 Gearbox Repair Service
We offer a fast, efficient and affordable gearbox repair service. If your gearbox is noisy due to bearing wear and the bearing hasn’t yet completely failed i.e. collapsed and caused further damage then the repairs can be even cheaper than a second-hand part. We use new genuine OEM components when rebuilding gearboxes to ensure that each and every rebuilt gearbox meets & exceeds OE specifications.
All of our reconditioned gearboxes come with a 2 year unlimited mileage warranty and free fittings at our Gearbox Service Centre. For more information, call us on 0203 815 9441.

Ajaz is a seasoned automotive electronics engineer with deep expertise in remanufacturing vehicle electronics. He has developed skills in all areas of the automotive field, from rebuilding hydraulic steering components, and mechanical gearboxes and reworking intricate vehicle electronics. Ajaz also acquired Bodyteq, a London-based vehicle bodyshop where he has developed extensive knowledge in automotive refinishing.
Alongside his automotive career, Ajaz has built a career in the IT industry, gaining accredited certification as an AWS Certified Cloud Practitioner, Cloud Architect, and Search Engine Optimisation (SEO) specialist.
Hi i have a Fiat bravo 1.4 T-Jet with the common bearings failing could you give me a price please…
Hi I have m32 box that is whining in 3rd and 4th, movement in 1st 4th and a little in 5th.
Astra cdti 150
Please could you quote.
Hi there I have Astra H GTC 6 SPEED
It should have m32 GEARBOX
the stick has movements in 2nd gear
what are the coming consequences
and which bearings should be changed
and how much will it cost
I have a 2006 Zafira 1.9 cdti sri 150 six speed
I need a gearbox overall. Movement on the stick in 1st,5th and 6th also a grumbling in 5th and a whine in 6th over 65mph. Can you help??
Many thanks!
Hi, my car is a 2006 Vauxhall astra 1.9 CDTI with the M32 gearbox.
There is a whine that starts at around 40 mph and gets slightly louder the higher the speed. Also, the gear sometimes moves when in first.
im unsure what needs to be fixed – whether I need bearing(s) replaced, oil changed or a completely brand new box!
Are you able to help please? Thanks!
Hello,
I have a M32 gearbox with the common symptoms of bearing failure,
Could you possibly send me info and pricing please.
Thankyou
hi, i have an astra 1.9 cdti 2008 model and i have noticed the gearbox is whining in 3rd and 4th gear and it also has a grinding noise when in nuteral and i have taking it to a local Mechanic for it to be looked at and they told me it was the dual mass that was causing the grinding and whining noises , would this be true or is it my gear box on the way out if so how much would it cost to have it reconditioned.
thanks,
phil
hello, I have A Vauxhall astra 1.4 turbo 2013 which is got Gearbox problem “Gears Crunching,Gear Problems When Hot,Noisy Gearbox (Whining / Grinding).
can you please let me know how much would it cost for repair? I live near by i can drop my Vehicle and the time for repair.
i have an astra gtc with the m32 gearbox problem
Hi there, my 2008 astra cdti 150 is whining and grinding in 3rd and 4th gear, its fine in 1st, 2nd, 5th and 6th. How much would it cost to put right? Thanks