Mercedes-Benz B-Class automatic gearbox specialists
Mercedes-Benz B-Class gearbox problems? Family B-Class with a gearbox that judders, whines or faults?
Specialists in Mercedes-Benz B-Class automatic gearbox repair, for CVT and 7G-DCT dual-clutch models.
- Whine or slip from an older CVT B-Class?
- Dual-clutch judder on a newer car?
- Fault message or limp mode with the family on board?
Do not keep driving a B-Class that judders or slips. A failing gearbox can leave a family stranded.
8am to 5.30pm, Monday to Friday
Mercedes-Benz B-Class automatic gearbox repair for family cars
A B-Class is bought for space and ease, and a gearbox fault takes away both.
The W245 B-Class used a CVT Autotronic. The W246 from 2011 used the 7G-DCT dual-clutch, and the W247 from 2018 uses the 7G-DCT or 8G-DCT.
Family use means short trips, school runs and loaded holidays. Typical complaints are whining, slipping, judder, hesitation, mechatronic faults and limp mode.
We repair and rebuild B-Class gearboxes with OEM-approved parts, and every repair carries a 12-month parts and labour guarantee. Call 0808 164 0418 with the registration and we will tell you which gearbox your Mercedes-Benz B-Class has.
Why use a Mercedes-Benz B-Class gearbox specialist
Families need the car back reliably. A Mercedes gearbox specialist diagnoses accurately, so the repair lasts. Call 0808 164 0418 to speak to a gearbox specialist about your Mercedes-Benz B-Class.
- Common gearboxes
CVT Autotronic, 7G-DCT, 8G-DCT - Common faults
Belt wear, control unit, clutch wear - Guarantee
12 months, parts and labour - Parts
OEM-approved - First step
Free phone diagnosis
Common Mercedes-Benz B-Class gearbox problems
Mercedes-Benz B-Class gearbox problems follow family school-run and holiday use. The symptoms below are the ones we see most.
or call 0808 164 0418
Mercedes-Benz B-Class automatic gearbox slipping
If the B-Class revs rise without the speed following, the CVT belt or dual-clutch is slipping, usually worse with passengers. Ring 0808 164 0418 as soon as you notice it.
Mercedes-Benz B-Class gearbox juddering
Judder pulling away on a dual-clutch B-Class suggests clutch wear. Describe it to a specialist on 0808 164 0418.
Mercedes-Benz B-Class gearbox warning light
A gearbox warning on a B-Class means a code is stored and needs reading. Call 0808 164 0418 and we will explain what the codes are likely to mean.
Mercedes-Benz B-Class limp mode
A B-Class in limp mode holds one gear and limits power. Call 0808 164 0418 before you drive any further.
Whine from an older CVT
A rising note under acceleration.
Hesitation on roundabouts
A lag after slowing.
Burning smell after long journeys
Heat in the clutch.
Understanding the B-Class gearbox in family use
Short trips and full loads decide how a B-Class gearbox ages.
Short trips and loads
Short trips keep clutches and belts in constant light use, and loaded holidays add heat.
Both wear the gearbox faster than steady miles.
- Judder from rest
- Slip with a full car
- Whine
The mechatronic unit
On dual-clutch cars the mechatronic unit selects the gears. Faults cause missed gears and warnings.
A diagnostic separates unit faults from clutch faults.
- Missed gears
- Delay
- Fault messages
Think it could be your your Mercedes-Benz B-Class gearbox?
Many symptoms look alike, so the only reliable answer comes from a diagnostic. Start with a call and we will explain what it involves.
Free phone diagnosis. 8am to 5.30pm, Monday to Friday.
Warranty & Compliance Approved
What happens when your B-Class comes to us
Clear steps from the first call to the guarantee.
Tell us the symptoms
Registration, mileage and when the fault shows.
Diagnostic and road test
We read the codes, check fluid and behaviour, and confirm the fault before quoting.
Repair or rebuild
Matched to the fault, using OEM-approved parts.
Return with a guarantee
12 months, parts and labour.
Mercedes-Benz B-Class gearbox repair: the practical questions
Mercedes-Benz B-Class gearbox rebuild: when it is the right answer
A Mercedes-Benz B-Class gearbox rebuild makes sense when wear is widespread, for example clutches, valve body and internals together. We only recommend it when a smaller repair would not last. Not sure which applies to your Mercedes-Benz B-Class? Call 0808 164 0418 and we will tell you.
How much does Mercedes-Benz B-Class gearbox repair cost?
Mercedes-Benz B-Class gearbox repair cost depends on which gearbox the car has, the fault and the extent of wear. We explain the options after a free phone diagnosis, so there are no surprises. Call 0808 164 0418 for a free phone diagnosis and a clear answer.
Is it worth repairing a B-Class gearbox?
Often yes, particularly for a car in good condition, and it carries a 12-month guarantee. Call 0808 164 0418 for a free phone diagnosis.
Getting your Mercedes-Benz B-Class to us
- 1
We collect your car
We arrange recovery or collection from your address.
- 2
We diagnose the gearbox
A full diagnostic tells us exactly what is wrong.
- 3
You approve the quote
Nothing goes ahead without your say-so.
No extra work goes ahead without your authorisation.
Mercedes-Benz B-Class gearbox repair FAQs
Still not sure? Call 0808 164 0418 and speak to a specialist.
In short
Automatic B-Class cars have used a CVT Autotronic and the 7G-DCT or 8G-DCT dual-clutch. Family use is hard on both, and Service4Service repairs the resulting wear.
Questions about your car? Call 0808 164 0418 for a free phone diagnosis.
Slipping on a Mercedes-Benz B-Class means the gearbox is not holding drive. Worn clutches, low pressure or contaminated fluid are the usual causes, and a diagnostic confirms which. Call 0808 164 0418 for a free phone diagnosis.
Yes. Many Mercedes-Benz B-Class gearbox faults can be repaired at component level without replacing the whole unit. Where wear is widespread, a rebuild gives a lasting fix. To talk it through with a specialist, call 0808 164 0418.
Early cars have a CVT, and later cars a dual-clutch. Give us the registration.
On an older car it is often a worn CVT belt or pulley.
Usually yes, at clutch or mechatronic level. Ring 0808 164 0418 and we will explain your options.
It adds heat and load, which accelerates wear.
Clutch wear or a mechatronic fault. For advice on your car, call 0808 164 0418, 8am to 5.30pm Monday to Friday.
Often yes, and a repair carries a 12-month guarantee. Call 0808 164 0418 for a free phone diagnosis.
You describe the symptoms and give the registration, and a specialist explains the likely causes. A full diagnostic on the car then confirms the exact fault.
Early cars have a CVT and later cars a dual-clutch. Give us your registration.
On an older car it is often a worn CVT belt or pulley.
Usually yes, at clutch or mechatronic level. To talk it through with a specialist, call 0808 164 0418.
Yes. Bespoke collection and delivery is available with repairs over £1,500. Ring 0808 164 0418 and we will explain your options.
Question not answered here?
Call and put it to a gearbox specialist. We are open 8am to 5.30pm, Monday to Friday.
Free phone diagnosis. 8am to 5.30pm, Monday to Friday.
Other Mercedes-Benz gearbox repairs
Mercedes-Benz B-Class gearbox trouble? Call for a free phone diagnosis.
Speak to a specialist, 8am to 5.30pm, Monday to Friday.
