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What is your personal experience with the M32 six speed gearbox?

  • Terrible, its cost me an absolute fortune!

    Votes: 23 53.5%
  • No problems at all, i dont know what all the fuss is about!

    Votes: 15 34.9%
  • Mine is showing signs of wear but i have had years of troublefree miles out of it.

    Votes: 5 11.6%

  • Total voters
    43
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You on the original oil still?
Yep (y)

Oh and I worked out ages ago that most box failures were down to either a weak 6 gear 'or' it was people using 6th gear, but not changing down when there is too much strain on it (E.g. going uphill). To be honest 6th is so highly geared that I don't know why anyone would need to use it.
 

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Super Moderator
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26,340 Posts
You on the original oil still?
Mine would have been on the original gearbox oil if it wasn't for the DMF & clutch change , none of the cars I've ran to big milages have had the gearbox oil changed , if it's running fine i leave well alone .
 

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14,505 Posts
Yep (y)

Oh and I worked out ages ago that most box failures were down to either a weak 6 gear 'or' it was people using 6th gear, but not changing down when there is too much strain on it (E.g. going uphill). To be honest 6th is so highly geared that I don't know why anyone would need to use it.
Not with my box's. Didn't get much chance to use 6th gear, mileage was low too. Even the replacement box was faulty & the replacement dmf. Think it's a lot to do with luck. I didn't have any at the time lol. I think with the H's, the 6th gear is the weak link as you've said. Not so much with the revised J m32 box's. The whole box being the weak link from my experience. K's, time will tell. Only a few models have these fitted now. I don't know which, as yet. Wont be the newer 1.0t 3 pots.
 

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Mine would have been on the original gearbox oil if it wasn't for the DMF & clutch change , none of the cars I've ran to big milages have had the gearbox oil changed , if it's running fine i leave well alone .
Yes your box had done well. Not running too much bhp through it either, may have helped. I agree, it's a design fault related to the failures. No harm to change the oil though. Not like your splitting the box to do so.
I was recently reading an article with warranty wise. The biggest main component now to fail with the Astra J's, is the manual box. Something like an 8% claim rate. That's for cars 3 years +, out of manufacturers warranty. Top of the league for gearbox failures. Didn't state which one, does not take too much guessing though lol. BMW were not much far behind though.
Even Vaux tec's are now being trained to repair them.
One bonus about driving a Vaux auto. The whole box is covered under vaux manufacturers warranty. With a manual, the clutch kit is not covered. DMF usually is. Same with most extended warranties too, inc Vaux extended & AA.
 

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Super Moderator
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Yes your box had done well. Not running too much bhp through it either, may have helped. I agree, it's a design fault related to the failures. No harm to change the oil though. Not like your splitting the box to do so.
I was recently reading an article with warranty wise. The biggest main component now to fail with the Astra J's, is the manual box. Something like an 8% claim rate. That's for cars 3 years +, out of manufacturers warranty. Top of the league for gearbox failures. Didn't state which one, does not take too much guessing though lol. BMW were not much far behind though.
Even Vaux tec's are now being trained to repair them.
One bonus about driving a Vaux auto. The whole box is covered under vaux manufacturers warranty. With a manual, the clutch kit is not covered. DMF usually is. Same with most extended warranties too, inc Vaux extended & AA.
Without doubt the M32 has had its reliability problems for a long time , however i don't think it's down to the power of the engine entirely as much as it isn't entirely down to incorrect driving , as for oil changing , people only change oil if they get a problem with their gearbox hoping it will be a cheap fix . I see a lot of poor mechanical sympathy driving everyday , when a cars brand new it can largely withstand bad driving initially & this is why our boss puts the bad drivers in the new cars on our fleet & the good drivers in the slightly older cars , however the repair bills he picks up early doors suggest it costs him more in the long run to have any driver who doesn't have the ability to drive a car properly . Which leads us back to the M32 a owner driver on our rank has had no issues with his box in the 4 years he's owned the taxi , no oil changes either & he's cruised past 200,000 miles , so is it his good driving or has he been lucky ?
 

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I see a lot of poor mechanical sympathy driving everyday , when a cars brand new it can largely withstand bad driving initially & this is why our boss puts the bad drivers in the new cars on our fleet & the good drivers in the slightly older cars , however the repair bills he picks up early doors suggest it costs him more in the long run to have any driver who doesn't have the ability to drive a car properly
I don't accept that, We've all had loads of cars with higher mileage and no sign of gearbox failing. Maybe if you treat your car like a boy racer everywhere it goes, but I doubt most get that treatment, most will have an average life.
 

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Premium Member
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Without doubt the M32 has had its reliability problems for a long time , however i don't think it's down to the power of the engine entirely as much as it isn't entirely down to incorrect driving , as for oil changing , people only change oil if they get a problem with their gearbox hoping it will be a cheap fix . I see a lot of poor mechanical sympathy driving everyday , when a cars brand new it can largely withstand bad driving initially & this is why our boss puts the bad drivers in the new cars on our fleet & the good drivers in the slightly older cars , however the repair bills he picks up early doors suggest it costs him more in the long run to have any driver who doesn't have the ability to drive a car properly . Which leads us back to the M32 a owner driver on our rank has had no issues with his box in the 4 years he's owned the taxi , no oil changes either & he's cruised past 200,000 miles , so is it his good driving or has he been lucky ?
Good driving will help, I don't think the majority of failed boxes were caused by bad driving. More bad design.
I've never had any gearbox issues until my m32 failures. Then a replacement box which was faulty too. Tecs to be trained up to fix them. All points to poor design to me.
 

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I don't accept that, We've all had loads of cars with higher mileage and no sign of gearbox failing. Maybe if you treat your car like a boy racer everywhere it goes, but I doubt most get that treatment, most will have an average life.
It's not about boy racer treatment , it's about bad driving & having no mechanical sympathy for the car , usually I get told that I'm only leasing it for 2 years so it won't be my problem or i change my car before 3 years so I'm not bothered. What we usually find amongst our drivers are things like ratcheting the handbrake up with force whilst not pressing the release button so all you hear is that horrible noise as the handbrakes pulled up , changing gear so fast that occasionally you hear the crunch as they try to get away quicker , red lining the engine in every gear where ever possible , rocking back & forth riding the clutch at the lights for a instant getaway , going into roundabouts at speed car leaning right over whilst braking & accelerating ( wears front tyres out really quick ) , last minute slamming the anchors on when approaching junctions etc , switching the engine off after a high speed run up & down the motorway etc etc . Many customers say to me the last driver they had wasn't a pleasant relaxed ride .
 

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Still don't accept it for the M32, the gearbox should be up to the job of the normal abuse a car gets.

The gearbox should be one of the toughest parts of a car, things like clutch, rings, driveshafts, joints, should all suffer well before a gearbox fails.
 

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Still don't accept it for the M32, the gearbox should be up to the job of the normal abuse a car gets.

The gearbox should be one of the toughest parts of a car, things like clutch, rings, driveshafts, joints, should all suffer well before a gearbox fails.
Gearboxes have always failed in lots of different cars for varying reasons , it's nothing new .
 

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Maybe you've been unlucky, the gearbox is the last thing a I worry about when ragging a car at any time. I wouldn't call myself a bad driver in the sense you mean, I let the engine warm, happy to take it to the red line, brake as fiercely as needed (that's what there are there for). Using a car as intended it not a sign of a bad driving style.
I've only had 1 gearbox failure , but that was due to high milage , not bad for 34 years of driving & owning cars .
 

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Mines on 120k and gearbox seems OK (touch wood) no movement in stick and no whining, could of had a box change or I may just be lucky. Just had dmf and clutch done and he said everything seems OK however without diving into it is doubt you could tell with a visual inspection
 

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Yep. M32 06 direct 2.2 at 61k miles. New all bearings replaced timkens at halifax for £300. See's loads of vxrs with ripped boxes.

Mine just had a slight whine between 30 and 40mph.

Caught nice and early.

Should last life time of car now.

£300 is a bargain for all bearings. Just jacks car up and works from under the wheel arch. Was done in 2hrs ☺
 

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M32 Gearbox Specialist
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Yep. M32 06 direct 2.2 at 61k miles. New all bearings replaced timkens at halifax for £300. See's loads of vxrs with ripped boxes.

Mine just had a slight whine between 30 and 40mph.

Caught nice and early.

Should last life time of car now.

£300 is a bargain for all bearings. Just jacks car up and works from under the wheel arch. Was done in 2hrs ☺
When you say all new bearings is that the 3 on the end casing side or all 6?
 
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