Parts for your 2018 Toyota Vitz|yaris-Gas struts

2018 Toyota Vitz/Yaris Gas Struts — what they do and when to replace them

Gas struts are used on the 2018 Toyota Vitz/Yaris hatch to support and lift the rear tailgate. This is confirmed by Toyota’s parts catalogue (listing the “Back Door Stay/Strut” for XP130-series Vitz/Yaris), Toyota service information that details back door damper replacement, and common aftermarket fitment catalogues (e.g., Stabilus/Monroe) listing rear lift supports for this model and year. The bonnet on this model uses a manual prop rod from factory, not gas struts.

On the Vitz/Yaris hatch, gas struts make life easier by taking the weight of the tailgate, lifting it smoothly, and holding it open while loading the weekly shop or the pram. They’re pressurised with nitrogen and lightly oiled to control motion, so the tailgate doesn’t slam or drift. Besides convenience, they’re a genuine safety item—healthy struts stop the hatch dropping on anyone’s hands or head.

Like any wear part, they lose pressure over time—often faster in colder climates or with lots of use. Tell-tale signs include a tailgate that won’t stay up, rises slowly, needs a helping hand to open, or leaves a fine mist of oil on the strut body. If any of that rings a bell, it’s time to replace them. Best practice is to fit struts in pairs to keep opening force balanced and the latch and hinges happy. Always match the correct length, end fittings and force rating to the vehicle’s OE spec for proper lift and hold.

Replacement is a straightforward driveway job with basic tools: support the hatch safely (broom handle, helper, or a proper prop), pop off the metal retaining clips at each end of the old strut, then click the new units onto the ball studs and secure the clips. Never attempt this with the tailgate unsupported. Avoid twisting the rod, and don’t compress a strut by hand—it can be damaged.

There’s not much day-to-day maintenance: keep the shafts clean, wipe off grime with a soft cloth, and don’t spray silicone, grease, or solvent on the rods or seals. During routine servicing, a quick function check—open, hold, and close—is smart. Most last many years, but when performance drops, fresh quality struts restore that light, easy lift the Yaris is known for.

• Common symptoms: hatch won’t stay up, slow lift (especially in cold weather), oily film on strut body.
• Good practice: replace in pairs, support the tailgate, match OE-spec parts.

Does the 2018 Yaris/Vitz bonnet have gas struts?
No. The bonnet uses a manual prop rod from factory. If bonnet gas struts are desired, aftermarket conversion kits exist, but they aren’t OEM and should be chosen carefully to avoid fouling and to ensure proper lift.

How long do the rear gas struts usually last?
Typically 5–10 years, depending on climate and usage. Heat, cold, and frequent cycling can shorten life. If the hatch sags, needs a shove to start moving, or drops unexpectedly, they’re due for replacement.

Can they be replaced at home, and should both be changed?
Yes, they’re a simple DIY fit with basic tools, but the tailgate must be securely supported. Replacing both sides at once keeps lift smooth and even, and helps prevent premature wear to hinges and the latch.