Isuzu MU-X LS-T 4WD 2018 off-road review

An update in 2016 brought the MU-X up to date; not only mechanically, but also in terms of liveability.

Extra metres of sound deadening have been applied under the bonnet and around the firewall, while additional USB ports grace both front- and middle-row seating positions. 

A note on those USB ports up front, though; what’s with the infuriatingly fiddly cover, Isuzu? Seriously, you need the ambidexterity and visual acumen of a rhesus monkey with bifocals to prise it open.

A steering wheel that’s not adjustable for reach also lets the side down a little, but the driving position is still good for both tall and short drivers. The interior treatment lifts the cabin’s ambience notably, too, with the soft-touch surfaces and toned-down plastics a welcome addition.

The cabin ambience has been lifted with soft-touch surfaces and toned-down plastics.

There is a pair of cupholders in the centre console, with the rearward one disappearing under the centre bin lid. You can also stash bottles in the doors, as well as in a pair of retro-yet-cool retractable bottle holders on either side of the dash.

The third row of seats can push the middle row a bit further forward in the cabin, which restricts knee room behind taller front seaters, but head room for middle seaters is good, and ISOFIX points for two seats are present and correct, along with two cupholders and two bottle holders.

The third row is relatively easy to access, too, and can be quickly folded flat into the boot floor when they’re not needed (and we didn’t for this trip). It’s more suited to smaller humans, of course, and it’s good to know the curtain airbags covers all three rows.

The luggage area is served by a top-hinged door that opens very wide and high – perhaps too high for some to easily reach it to close it again. The presence of the third row of seats adds height to the load lip, but the large aperture makes it a doddle to stash large, unwieldy items like camping fridges. 

The 878 litres of capacity with the third row stowed is plenty of room to stash large unwieldy items.

There’s 878 litres of space with the third row stowed, which shrinks to 235 litres when they’re locked away. With everything folded away, there are 1830 litres of cargo space available.

Chasing the ever-evolving landscape of emissions regulations is a frustrating business for any car company. Already blessed with an ox-strong diesel powerplant that attracts a lot of followers for its honest if gruff performance, Isuzu needed to come up with a plan that would satisfy the rule-makers but not upset its loyal customer base.

It revised the MU-X’s 3.0-litre four-cylinder (4JJ1-TC) turbo-diesel engine in 2017 to make it comply with Euro5 standards. A new turbocharger, injectors, glow plugs, a new piston profile and a diesel particulate filter system were added, along with an Aisin-sourced six-speed automatic transmission to replace the old five-speed auto.

It not only cleaned up its act, but the new version of Isuzu’s most popular engine also gained 50Nm more torque, with a wider spread of twist over more of its rev range. It produces 130kW and 430Nm in total.

Isuzu claims a category-best fuel economy number of 7.9 litres per 100km for the 2157kg MU-X, an improvement of 0.2L/100km over the previous spec. 

Our on-road testing component returned a dash-indicated figure of 9.1L/100km over approximately 200km, while that figure rose during the 65km of dirt trail work to 10.9L/100km.

Its 65-litre tank does limit its theoretical range to around 820km, which may put a crimp in its touring potential.

On rough surfaces and gravel roads, the MU-X’s ride and handling balance is outstanding. There’s a suppleness that gives it real confidence on higher speed gravel roads, while it’s got sufficient clearance front, rear and centre to tackle more tricky terrain.

The six-speed auto works well when the going gets slow and rough, with the MU-X’s switchable 4x4 system incorporating a hill-descent control that works hand in glove with the auto’s manual override mode.

The MU-X's switchable 4x4 system incorporates hill-descent control.

In fact, the MU-X’s off-road ability is very impressive, thanks in part to a new locking diff for the rear end and that compliant coil suspension.

And even over gravel roads, there is almost zero noise penetration from the new 18-inch Dunlop GrandTrek all terrain tyres. The silence from under the MU-X is almost uncanny.

As mentioned, the spare wheel resides under the rear end of the MU-X, and is slanted upwards for relatively easy access and better ground clearance.

Speaking of which, the MU-X offers 230mm of clearance – the large running boards either reduce that clearance or offer underbody protection, depending on your viewpoint – with a departure angle of 25.1 degrees and an approach of 24 degrees.

The MU-X offers 230mm of clearance and the spare wheel is stashed underneath.

It’ll tow 3000kg of braked trailer and cop a hefty 300kg on the towball, while it offers 650kg of payload on top of that maximum tow weight – don’t forget, though, that figure needs to include people, too.

If you want to get a bit damp, it’ll ford a river up to 600mm, as long as you're at walking pace.

Isuzu offers a five-year/130,000km warranty on the MU-X, with service intervals of 12 months or 15,000km suggested. 

If you spend more of your time on the gravel and dirt, you might want to shorten those intervals – or at least clean the easy-to-access air filter from time to time.

Fixed-price servicing is offered for five years, as well, and costs $2090 over five years or 75,000km.