Mitsubishi Grandis Service Schedule: Intervals, Costs & What's Critical

Mitsubishi Grandis service: key facts

Oil service every 9,000 miles or 1 year
Basic service costs £80–£180 depending on garage
Timing belt: £350–£500 — don't skip this one
1 generation from 2004 to 2010
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 Manufacturer interval 9,000 miles or 12 months. Use 5W-30 fully synthetic oil. Change filter at every service. Consider 6,000-mile intervals for high-mileage engines or severe driving conditions. NA	9,000 miles or 1 year	£80–£120 Dealer: £120–£180
Air filter Manufacturer interval 18,000 miles or 2 years. Check more frequently in dusty conditions. Blocked filter reduces performance and increases fuel consumption. NA	18,000 miles or 2 years	£25–£40 Dealer: £40–£60
Cabin pollen filter Replace every 18,000 miles or annually. Located behind glove box. Blocked filter reduces heater/air conditioning efficiency and can cause musty odours. NA	18,000 miles or 2 years	£30–£50 Dealer: £45–£70
Fuel filter Manufacturer interval 30,000 miles. Located in fuel tank on this model. Blocked filter causes power loss and possible fuel pump damage. Prime system after replacement. NA	30,000 miles or 3 years	£120–£180 Dealer: £180–£260

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
Timing belt Manufacturer interval 60,000 miles or 5 years. NA	60,000 miles or 5 years	£350–£500 Dealer: £550–£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
Spark plugs Manufacturer interval 30,000 miles. Use NGK or equivalent platinum plugs. Check for carbon fouling which can indicate engine wear or fuel system issues. NA	30,000 miles or 3 years	£80–£120 Dealer: £120–£170
Brake fluid Manufacturer interval 2 years regardless of mileage. Brake fluid absorbs moisture over time reducing boiling point and causing internal corrosion. Use DOT 3 or DOT 4 specification fluid. NA	2 years	£60–£90 Dealer: £90–£130
Coolant flush Manufacturer interval 60,000 miles or 5 years. Use Mitsubishi genuine or equivalent long-life coolant. Old coolant loses anti-corrosion properties and can cause radiator or heater matrix failure. NA	60,000 miles or 5 years	£80–£120 Dealer: £120–£180

Known issues to watch for

The most common problems reported on the Mitsubishi Grandis, ranked by severity.

dangerous

Subframe mounting point corrosion

The load-bearing structure around suspension mounting points suffers from corrosion that weakens the connection between the subframe and body shell.

major

Excessive steering free play

The steering rack develops excessive wear causing dangerous free play at the steering wheel.

major

Suspension component wear and corrosion

Multiple suspension components suffer from premature wear and corrosion damage.

minor

Engine management light illumination

The engine management warning light illuminates at 4-litre petrol variant at higher mileages.

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

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Mitsubishi Grandis service FAQs

How often should a Mitsubishi Grandis be serviced?

A Mitsubishi Grandis should have an oil service every 9,000 miles or 1 year, whichever comes first. Manufacturer interval 9,000 miles or 12 months.

How much does a Mitsubishi Grandis service cost?

A basic service at an independent garage typically costs £80–£120. Main dealer servicing is usually £120–£180. Major items like timing belts or gearbox services cost significantly more.

Can I service a Mitsubishi Grandis 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.

Mitsubishi Grandis Service Schedule & Costs