2026 MGU9 bonnet will not stay up: identify the gas strut before selecting parts

The bonnet is opened for an engine-bay inspection but no longer seems to hold its position as securely as before. For this complaint on the Australian MY26 MGU9, distinguish the bonnet gas strut from the latch and tailgate mechanisms before ordering a rod of similar length.

Separate front bonnet support from tailgate assistance

The manufacturer’s MY26 technical table lists Engine Bonnet—Gas Strut for Explore, Explore X, Black Edition and Explore Pro.[Manufacturer technical table][P09]

Specify that the request concerns front bonnet support. This is neither the bonnet latch nor the load-bed tailgate lift-assistance mechanism. Shared words such as “support” and “assistance” do not identify the same procurement object.

External length provides limited information

Stabilus’s public gas spring information, for example, describes damping and different connection types as well as assisted movement and support. This general information reminds buyers to consider force, stroke and end fittings, rather than only how far the item extends.[General technical information][P15]

It is general supplier technology, not evidence that MGU9 uses this brand, and it cannot assign a force in newtons to MGU9. Similar appearance or a seemingly compatible ball joint does not complete fitment verification. [To be verified]

Record the support change before deciding on replacement

Describe whether the open bonnet sinks or fails to hold its previous position, and note any earlier accident repairs or removal and installation. The aim is to record what happened, rather than ask an owner to repeatedly release the bonnet to test it.

When support is in doubt, the repairer should secure the bonnet reliably before inspection. Retain original markings, overall shape and photographs of both mounting ends. Vehicle inspection must determine whether the strut needs replacement or whether a mounting-related issue is involved; the specification table cannot decide this.

Scope and verification

This article covers only Australia, MY26 MGU9 Explore, Explore X, Black Edition and Explore Pro.[Scope reference][P09] Stabilus information explains general gas spring principles only. It does not establish the MGU9 supplier, internal construction or repair parameters. Do not select a substitute by length or an assumed force value.

No public data was available in the reviewed material for original strut count, force, stroke, end fittings, supplier, support tests, removal and installation or replacement criteria, OE numbers, separate parts availability or interchangeability. [To be verified] Check compatibility or interchangeability using the VIN and the local Australian manufacturer parts catalogue.

For the parts discussed here, use the parts enquiry page.

[P09]: https://mgmotor.com.au/brochures/MGU9_2026.pdf
[P15]: https://www.stabilus.com/products/gas-springs/lift-o-mat