Mercedes Benz Gla service: key facts
- Oil service every 15,500 miles or 1 year
- Basic service costs £120–£300 depending on garage
- Automatic transmission fluid: £200–£300 — don't skip this one
- 1 generation from 2014 to 2020
- 8 tracked service items across routine, major, and periodic schedules
Routine service items
These are the items covered in a standard service. Most garages include oil, oil filter and a basic inspection. The rest are typically checked or replaced on a schedule.
| Service item | Interval | Typical cost |
|---|---|---|
|
Engine oil and filter
Mercedes ASSYST service indicator typically shows 15,500 miles or 1 year.
X156
|
15,500 miles or 1 year |
£120–£180
Dealer: £200–£300
|
|
Air filter
Mercedes schedule shows 2 years or 31,000 miles.
X156
|
31,000 miles or 2 years |
£25–£45
Dealer: £50–£80
|
|
Cabin pollen filter
Annual replacement recommended.
X156
|
15,500 miles or 1 year |
£40–£70
Dealer: £70–£110
|
|
Fuel filter
4 years or 62,000 miles on diesel variants. In-tank filter on most variants. Blocked filter causes loss of power and rough running. More frequent changes needed with poor quality diesel fuel.
X156
|
62,000 miles or 4 years |
£80–£140
Dealer: £150–£250
|
Major service items
These are the big-ticket items. Miss them and you risk engine or gearbox damage. The costs are higher but the consequences of skipping are much worse.
| Service item | Interval | Typical cost |
|---|---|---|
|
Automatic transmission fluid
Mercedes claims lifetime fill but specialists recommend 78,000 mile changes on 7G-DCT dual-clutch and 9G-Tronic automatics.
X156
|
78,000 miles or 6 years |
£200–£300
Dealer: £350–£550
|
Has this Mercedes Benz Gla been serviced on schedule?
Check the dealer service records to see if the work above was actually done.
£6.99 · Full refund if no records found
Periodic maintenance
Items that don't need doing at every service but should be on your radar at the right mileage or age.
| Service item | Interval | Typical cost |
|---|---|---|
|
Spark plugs
Mercedes schedule shows 4 years or 62,000 miles for petrol engines.
X156
|
62,000 miles or 4 years |
£80–£140
Dealer: £140–£220
|
|
Brake fluid
2 years regardless of mileage.
X156
|
2 years |
£60–£100
Dealer: £90–£150
|
|
Coolant flush
Mercedes schedule shows 6 years or 93,000 miles.
X156
|
93,000 miles or 6 years |
£120–£180
Dealer: £200–£300
|
Buying a used Mercedes Benz Gla? Check its service history first.
A Gla with a patchy service history can cost you thousands in missed timing belts, skipped oil changes, and hidden neglect. We pull the franchised dealer records — every visit, every stamp, every mileage reading — so you can see exactly what's been done and what's been skipped.
£6.99 · No records found = full refund, zero risk
Related
- Mercedes Benz Gla buyer's guide
- Mercedes Benz Gla service history check
- Mercedes Benz Gla common problems & known issues
- Mercedes Benz Gla MOT failure rates
- Mercedes Benz Gla price guide
- Mercedes Benz Gla car check £7.49
- Free Mercedes Benz Gla faults check
- Free MOT failure rate check
- Free car check
- What does "full service history" actually mean?
- How service history affects car values
Mercedes Benz Gla service FAQs
How often does a Mercedes Benz Gla need servicing?
A Mercedes Benz Gla needs servicing every 15,500 miles or 1 year, whichever comes first. Mercedes ASSYST service indicator typically shows 15,500 miles or 1 year.
What does a Mercedes Benz Gla service cost?
A basic service at an independent garage costs £120–£180. Main dealer servicing runs £200–£300. Major items like timing belts or gearbox services cost significantly more. Independent garages are typically 30 to 50% cheaper for the same work.
Is a Mercedes Benz Gla expensive to maintain?
Routine servicing starts from £120 at an independent garage, which is above average for this class of car. The bigger costs come from periodic items like timing belts, brake fluid changes, and transmission servicing. Keeping on top of the schedule avoids expensive failures.
How do I check a Mercedes Benz Gla's service history?
You can check any Mercedes Benz Gla's official dealer service records online using just the registration number. The check retrieves every logged dealer visit, including dates, mileage, and work done, so you can see whether the schedule has been followed or if there are gaps. It costs £6.99 and you get a full refund if no records are found.