Parts for your 2020 Mitsubishi Asx-Engine mount

2020 Mitsubishi ASX engine mount — what it does and when to replace it

Based on technical sources, the 2020 Mitsubishi ASX absolutely uses engine mounts. The Mitsubishi Motors workshop manual for ASX/RVR/Outlander Sport (2019–2020) includes a dedicated Engine Mounting section outlining inspection and replacement. The MMC ASA (Aftersales Support Application) parts catalogue lists multiple engine mounting insulators and torque rods for the ASX of this model year. Independent repair manuals for the platform (covering 4B11/4A92 engines) also document procedures for the right-hand engine mount, left-hand transmission mount, and the front and rear roll stoppers. That confirms the part is fitted and serviceable on the 2020 ASX.

The engine mounts on a 2020 Mitsubishi ASX keep the engine and transmission securely located while absorbing vibration so the cabin stays smooth. Typically there are four mounts: a hydraulic right-hand mount on the engine side, a left-hand transmission mount, plus front and rear torque mounts (roll stoppers) that control fore–aft movement under acceleration and braking. When these are in good nick, the ASX feels quiet, composed and free of nasty buzz through the steering wheel and seats.

As part of routine servicing, it’s smart to give the mounts a once-over from underneath on the hoist. Look for perished rubber, cracked bonded sections, collapsed mount height, or fluid seepage from the hydraulic mount. Excessive engine rock when blipping the throttle, a thump on take-off, new vibrations at idle with the A/C on, or a clunk when shifting from Reverse to Drive are all classic tell-tales.

If replacement’s on the cards, use quality OEM or reputable aftermarket mounts and renew any single-use fasteners. Supporting the powertrain properly is key: use an engine support bar or a stand under the sump with a timber block so the alloy pan isn’t damaged. Tighten fasteners to the specified torque with the vehicle sitting at normal ride height so the mounts aren’t preloaded. After installation, re-check clearances around the exhaust, shrouds and the bonnet to avoid knocks.

There’s no fixed interval for engine mounts, they’re replaced on condition. High kilometres, heat, oil contamination and rough roads can shorten their life. A quick inspection every service, and a thorough check around 100,000–150,000 km, keeps things sweet and prevents vibration from masking other faults.

• Common symptoms: vibration at idle, clunks on gear changes, engine rocking, visible cracks or hydraulic fluid leaks.
• Service tips: inspect on a hoist, support the engine, follow torque specs from the Mitsubishi workshop manual, and road test afterwards.

Popular questions

How long do engine mounts last on a 2020 ASX?
In typical Aussie and Kiwi conditions they often run well past 100,000 km, and many go to 150,000–200,000 km. Life depends on heat, driving style, and fluid leaks. An annual visual check during routine servicing is the best way to catch wear early.

Is it safe to drive with a worn engine mount?
Mild wear usually shows up as extra vibration, but heavily worn or torn mounts can let the engine move too much, causing knocks, stressing exhaust flex joints, and affecting shift quality. If there’s clunking, visible damage or hydraulic leakage, it’s best to sort it promptly.

Should you choose genuine or aftermarket mounts?
Genuine mounts deliver OE NVH performance and fitment. Quality aftermarket options can be good value, just avoid ultra-stiff “performance” mounts for daily driving, as they can add vibration. For most ASX owners, OEM or OEM-equivalent is the sweet spot.