What is a Gearbox?
The manual gearbox takes the engine rotational torque and passes it through varying arrangements of gears (cogs) that convert it to a different output speed that turns the driven axle(s). Without gearboxes cars would be practically useless and the output of the combustion engine would always directly correspond to the speed of the wheels.

Most manual gearboxes have 5 or 6 forward gears and one reverse gear. The gear ratios are different depending on the type of car and the engine characteristics, performance cars can have longer gearing so that cars can get to 80+mph in second gear, whereas small town cars will have much shorter ratios.

Manual gearboxes take a lot of stress and quite often drivers with poor gear changing technique can put extra strains on the components of the gearbox. Poorly maintained gearboxes can suffer from worn out components and seize up, so its important that a gearbox is maintained correctly and the oil level is maintained.
What problems can be caused by a faulty Gearbox?
How much does it cost to replace the Gearbox?
Replacement manual gearboxes can cost thousands when bought from the manufacturer. Generally you won't buy a brand new gearbox for an older car that is out of warranty, it makes a lot more sense to buy a refurbished unit, these an cost from £400 for a car like a Ford Focus.
1176 problems that mention the Gearbox

Showing the latest 10, see more problems here

When I took my car and gave acceleration suddenly when it's on 1st gear there is a jerk that happens it's automatic peugeot 5008 2010

Gear box issue when suddenly giving acceleration, there is a jerk and the car shakes too hard and lose the pick up

2010 Peugeot 5008 1.6
Posted: Oct 20, 2021
Ford Focus Sport 1.6TDCi. New clutch assembly has left the car with very notchy gear selection

Had the full clutch assembly replaced due to a slipping clutch. After this was done the gear selection has been very "notchy". I have returned it to the Garage 3 times and each time there was no impro...

2011 Ford Focus Focus Sport 1.6 TDCi
Posted: Oct 20, 2021
Gearbox slips after about 30 miles of driving

Can drive about 30 miles then gearbox slips gears seems when gearbox is up to temp I guess car has only done 58.000 miles

2010 Ssangyong Korando 2.0ltr esx
Posted: Oct 17, 2021
I connected battery round the wrong way

I jump started the car with the jump leads round the wrong way . the engine turns over but no dashboard and wont start

2003 Citroen C5 C5
Posted: Oct 14, 2021
Gearbox 3rd gear

When accelerating gradually, there seems to be two stages to third gear

2013 Peugeot 5008 2.0HDI Allure
Posted: Oct 12, 2021
Central locking not working

Have replaced the key card battery but had to use the emergency key. Since then the central locking is not working or the main locking button inside.

Posted: Oct 11, 2021
. Drive away accelerating lag on pedal

Lag when pressing accelerator pedal causing roll back.

2016 Volkswagen Polo 1.2 DSG AUTO Tsi
Posted: Oct 10, 2021

As my journey gets longer the gear lever gets difficult to change gear.when I stop and put the car in to neutral it will not go into any gear,start the engine up problem solved

2006 Vauxhall Astra 1.6
Posted: Oct 10, 2021
When the car does about 30miles cant select 1st second or reverse once the car cools down it goes into gear 0k then once it heats up cant select gears once more

when the car does about 30 miles cant select 1st second or reverce if you come out of reverce it is very stiff after half hour rest no problum goes in to all the gears lovely then problem back again t...

2012 Vauxhall Antara 2.2 4x4
Posted: Oct 4, 2021
Occassional lack of power when accelerating

Hello I have a 308 SW with EAT6 auto gearbox. The issue I am experiencing is an intermittent one concerning lack of power when stopped or after slowing down for left or right hand turns. This does not...

2017 Peugeot 308 1.2 PureTech 130 Allure 5dr EAT6
Posted: Oct 4, 2021
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