Parts for your 2020 Mitsubishi Outlander-Drive belt

2020 Mitsubishi Outlander drive belt: what’s fitted, what’s not, and how to look after it

Based on Mitsubishi Motors service literature for MY2020 Outlander and Outlander PHEV, plus Australian parts catalogues from Gates and Dayco, the accessory drive belt (serpentine belt) is fitted to 2020 Outlander 2.0 and 2.4 petrol and 2.2 diesel variants, but it is not used on the 2020 Outlander PHEV. The conventional petrol/diesel engines list an accessory belt and tensioner in the service and parts documentation, while the PHEV’s factory manuals and maintenance schedule omit any accessory belt, reflecting its belt‑less accessory layout.

Why the PHEV doesn’t use a drive belt: Mitsubishi’s hybrid powertrain integrates a high‑voltage electric A/C compressor, an electric water pump, and a DC‑DC converter in place of a traditional alternator, with electric power steering as well. With no belt‑driven ancillaries required, there’s simply no serpentine belt to maintain on the PHEV.

For petrol and diesel 2020 Outlander models that do use a drive belt, the belt’s job is to spin the engine’s front‑end accessories reliably under all conditions. That single multi‑ribbed belt drives the alternator to keep the 12‑volt system healthy, runs the A/C compressor so the cabin stays cool, and (on many variants) turns the mechanical water pump to keep engine temps in check. It’s a quiet achiever under the bonnet, and when it’s in top nick you barely notice it’s there.

Servicing wise, it’s smart to have the belt inspected at every routine service (typically every 12 months or 15,000 km in Australia and New Zealand). A technician will check rib wear, glazing, cracking, fraying edges, and any contamination from coolant or oil. Listen for squeals on cold starts, watch for dim charging lights, weak air‑con performance, or rising temps at idle—these can hint at a slipping or tired belt. Most 2020 Outlanders use an automatic tensioner, so if the belt’s worn, noisy or stretched, replace it and consider swapping the tensioner and idler pulleys at the same time to prevent repeat visits.

There’s no hard‑and‑fast kilometre limit because use and climate matter, but many owners replace belts around 90,000–120,000 km or about six years, earlier if wear shows up. Stick with quality EPDM belts that match Mitsubishi’s specification, route them exactly per the under‑bonnet diagram, and torque the tensioner hardware correctly. After fitting, recheck alignment and listen for noise over the first few drives. Keep cleaners and coolant off the belt, and if an oil leak has soaked the belt, fix the leak and fit a new belt—contamination shortens belt life fast.

Technical basis: Mitsubishi Motors Outlander (MY2020) service and owner’s manuals (engine accessory drive and maintenance schedule), Outlander PHEV service literature (electric A/C compressor, DC‑DC converter, electric water pump), and Australian application data from Gates and Dayco confirming belts on petrol/diesel variants and none listed for the 2020 PHEV.

• Uses a drive belt: 2.0 petrol, 2.4 petrol, 2.2 diesel
• No drive belt: 2020 Outlander PHEV

Popular questions

Does a 2020 Outlander PHEV have a drive belt?
No. The PHEV uses an electric A/C compressor, electric water pump and a DC‑DC converter in place of an alternator, so there’s no serpentine belt to maintain or replace.

How often should the drive belt be replaced on a 2020 Outlander petrol or diesel?
Have it inspected at every service (about 12 months/15,000 km). Many belts last 90,000–120,000 km or around six years, but replace sooner if cracks, glazing, noise, or contamination show up. Always follow Mitsubishi’s service guidance and local conditions.

What are the signs the serpentine belt needs attention?
Squealing on cold start, visible cracks or fraying, shiny/glazed ribs, battery light flickering, overheating at idle, or weak air‑con performance. Any of these warrant an inspection and likely a new belt—and possibly a tensioner/idler check.