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Mercedes Benz Gl 320 Service Schedule & Costs

Every service item for the Mercedes Benz Gl 320 — what needs doing, when, and what it should cost at an independent garage versus a main dealer.

X164 (2006–2012)3.0L V6 CDI

Mercedes Benz Gl 320 service: key facts

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 itemIntervalTypical 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 itemIntervalTypical 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 itemIntervalTypical 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

Known issues to watch for

The most common problems reported on the Mercedes Benz Gl 320, ranked by severity.

dangerous
Brake pipe corrosion (X164)
The GL 320 uses steel brake pipes that are vulnerable to corrosion from road salt and moisture.
dangerous
Brake hose deterioration (X164)
The flexible brake hoses on the GL 320 connect the rigid brake pipes to the brake calipers at each wheel.
major
CV joint boot deterioration (X164)
The constant velocity (CV) joints at each end of the driveshafts are protected by rubber boots that contain the grease and exclude dirt and water.
major
Shock absorber deterioration (X164)
The GL 320's shock absorbers must cope with the weight of a large SUV and varying load conditions from towing or cargo.

1 more known issues tracked. Check a specific car's history to see what matters for its age and mileage.

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.

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£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.