Mercedes Benz Gl 320 service: key facts
- Oil service every 15,000 miles or 1 year
- Basic service costs £180–£450 depending on garage
- Automatic transmission fluid: £300–£400 — don't skip this one
- 1 generation from 2006 to 2012
- 7 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 system calculates variable intervals up to 15,000 miles.
X164
|
15,000 miles or 1 year |
£180–£250
Dealer: £350–£450
|
|
Air filter
Check annually, replace every 30,000 miles or when visibly contaminated. Dirty air filter reduces performance and increases fuel consumption on diesel engines.
X164
|
30,000 miles or 2 years |
£40–£60
Dealer: £80–£120
|
|
Cabin pollen filter
Annual replacement recommended. Blocked filter reduces air conditioning efficiency and causes cabin humidity issues. Located behind glove box.
X164
|
20,000 miles or 1 year |
£60–£80
Dealer: £120–£160
|
|
Fuel filter
Critical on diesel engines. Blocked filter causes power loss and injector damage. Filter incorporates water separator - drain water regularly if indicated.
X164
|
60,000 miles or 4 years |
£120–£180
Dealer: £250–£350
|
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 strongly recommend 80,000 mile changes.
X164
|
80,000 miles or 8 years |
£300–£400
Dealer: £600–£800
|
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 |
|---|---|---|
|
Brake fluid
Two-year interval regardless of mileage. Brake fluid absorbs moisture over time, reducing boiling point and causing internal corrosion. Use DOT 4+ specification fluid only.
X164
|
2 years |
£80–£120
Dealer: £150–£200
|
|
Coolant flush
Mercedes specifies 150,000 mile intervals but many specialists recommend 10 years maximum. Use MB 325.0 specification coolant only. Check level annually - expansion tank visible under bonnet.
X164
|
150,000 miles or 10 years |
£150–£200
Dealer: £300–£400
|
Check a Mercedes Benz Gl 320's service history
Enter a reg to see franchised dealer service records — dates, mileage, and work done at every visit.
Check service history£6.99 · Full refund if no records found
Related
Mercedes Benz Gl 320 service FAQs
How often should a Mercedes Benz Gl 320 be serviced?
A Mercedes Benz Gl 320 should have an oil service every 15,000 miles or 1 year, whichever comes first. Mercedes ASSYST service indicator system calculates variable intervals up to 15,000 miles.
How much does a Mercedes Benz Gl 320 service cost?
A basic service at an independent garage typically costs £180–£250. Main dealer servicing is usually £350–£450. Major items like timing belts or gearbox services cost significantly more.
Can I service a Mercedes Benz Gl 320 at an independent garage?
Yes. Under UK consumer law, using an independent garage does not void your manufacturer warranty, provided they use parts meeting the manufacturer's specification and follow the correct schedule. However, independent services won't appear in the franchised dealer digital records.