Parts for your 2015 Mitsubishi Asx-Gas struts

2015 Mitsubishi ASX gas struts: what they do and when to replace them

Gas struts absolutely are used on the 2015 Mitsubishi ASX. The rear tailgate is supported by a pair of gas‑charged lift supports, while the bonnet is held up by a simple prop rod from factory. This layout is confirmed by Mitsubishi’s Group Service Information workshop procedures for the rear gate and the Mitsubishi ASA parts catalogue (listed as tailgate “stay/lifter” for GA-model ASX). Major fitment catalogues from OE suppliers such as Stabilus and Monroe also specify two rear lift supports for ASX/RVR/Outlander Sport models from 2010–2019.

On the ASX, those tailgate gas struts do the heavy lifting—literally. They counterbalance the hatch so it opens smoothly, stays put overhead, and closes with minimal effort. Over time, seals wear and the nitrogen charge drops, especially in colder weather, and that’s when the hatch starts sagging or won’t hold itself up. If the struts are tired, it’s not just annoying, it’s a safety risk if the tailgate drops unexpectedly.

As part of routine servicing, it’s worth giving the gas struts a quick check. Listen and feel for graunchy movement, check for oil misting on the rod or body, and test holding strength: open the tailgate fully and see if it creeps down. In winter, marginal struts often show their age first. The polished rods should be clean and free of nicks—don’t lubricate them, as oils attract grit and damage the seals.

• Typical signs they’re due: tailgate won’t stay up, opens sluggishly, or needs a shove to start moving.
• Replace in pairs to keep lift and damping even on both sides.
• Use the correct force rating and end fittings matched to the ASX—trusted brands follow OE spec.

Replacement is a straightforward job with the right care. Support the tailgate securely (a helper or prop), then pop off the retaining clips, swap each strut one at a time, and click the new ones on. Most don’t need tools beyond a small flat screwdriver. There’s no practical or reliable “re‑gassing” for worn units—once they’re soft or leaking, new struts are the fix.

Service tip for Aussie and Kiwi owners: expect lifespan to vary with climate and use, but 5–10 years is common. If you often load bikes, camping gear, or a tailgate rack, keep an eye on strut performance and consider earlier replacement for safety.

Popular questions about 2015 Mitsubishi ASX gas struts

How long do the ASX tailgate gas struts usually last?
Most last around 5–10 years, depending on climate and usage. Heat, cold, dust, and frequent cycling all play a part. If the hatch won’t stay up or opens lazily, they’re ready for replacement.

Can ASX gas struts be re‑gassed, or do they need replacing?
They’re generally sealed units. In practice, once they lose charge or start leaking, the reliable fix is replacement with new struts matched to the ASX’s specifications.

Does the 2015 ASX have bonnet gas struts from factory?
No. The bonnet uses a prop rod from factory. Aftermarket bonnet strut kits exist if someone wants hands‑free lifting, but they’re not original equipment on the 2015 model.