Isuzu MU-X vs Lexus UX

What's the difference?

The MU-X has always had plenty of appeal as a daily driver – dependable, not dynamic – and it’s a proven 4WD wagon.

Some people don't like the noisy, sluggish engine, but I don't mind it because it delivers off-road.

There was already a lot to like about the seven-seater wagon in terms of its off-road capability, driver-assist tech, standard features, and simple all-round driveability, and the X-Terrain – which encompasses all of that AND adds some polish to the mix – is an impressive top-shelf addition to the MU-X line-up. Even if it's so pricey...

The updated Lexus UX300h Luxury is a solid entry in the premium compact SUV segment. It doesn’t break new ground, and there are areas that could be improved, but it handles well, offers a thoughtful selection of amenities for a base-grade luxury model, and its compact size makes it easy to park almost anywhere. For buyers seeking a stylish, efficient, and practical hybrid with a luxury badge, it’s a dependable choice.

As I’ve said before, the MU-X has never been particularly exciting or boring in terms of design, just comfortably adopting a low-key, middle-of-the-road type design – sales gold, in other words.

But the X-Terrain has distinctive ‘X’ branding here and there – inside and out – and that adds a subtle class to this variant.

The X-Terrain is 4860mm long (with a 2855mm wheelbase), 1870mm wide (excluding mirrors), 1825mm high and has a listed kerb weight of 2195kg.

It has a wheel track of 1570mm and an 11.6m turning circle. 

Our test vehicle has the exclusive X-Terrain paint – slate grey metallic – which matches well with the X badging, bigger grille design, new headlights, three-tier LED tail-lights, and redesigned wheels.

The interior strikes a stylish note as well with red stitching on the dash, centre console and leather-accented seat trim.

The updated Lexus UX is technically a compact SUV, but it feels more like a hatchback that's taken a small dose of steroids. The facelift brings a sharper look with a stylised 3D spindle grille, new air intake vents, fresh 17-inch alloy wheels, updated daytime running lights and a full-width rear light bar. The sculpted bodywork still showcases Lexus’ signature origami-like panelling and, overall, it’s a handsome little thing. That said, the heavy use of black plastic moulding around the lower edges detracts from its premium appeal.

Inside, the cabin takes a more understated approach. Up front it feels premium-enough, with synthetic leather trims, soft-touchpoints and those high-tech dual 12.3-inch displays headlining the dash. Your eye moves smoothly across the layout without lingering too long on any single element, which adds to the sense of elegance.

Not everything feels top-tier, though. Hard plastics are still scattered throughout the cabin, and they’re especially noticeable in the back seat where the doors have very little in the way of a soft surface. Yes, this is the base grade, but in a car wearing a luxury badge, it’s something you notice more than you should.

The interior has a pleasant, familiar and practical feel about it and this is an easy space in which to swiftly become comfortable. 

Controls are easy to locate and operate and charging options are numerous – a mix of USB-A, USB-C and 12V up front, and USB-A for the second row.

Storage places include recesses for your everyday carry gear, a suitably deep centre console, as well as dual cupholders up front, cupholders in the rear fold-down centre armrest and bottle holders in the doors.

There are cupholders either side of the third row in the MU-X for passengers riding back there.

The MU-X has physical-button options to activate some functions (including to switch on the audio system, to adjust volume, access sat nav etc).

Seats are adequately comfortable and supportive through all three rows – yes, even the third row is roomy enough to prevent whining from whoever is stuck back there.

The cargo area is 311 litres with all three rows in use, 1119L with the third row flat and 2138L with the second and third rows folded.

The rear cargo area has a cargo cover, tie-down points, a 12V power outlet, a storage space under the rear cargo area floor and a space for tools inside the driver’s side rear cargo wall.

The UX is a compact SUV, so it's best not to expect a sprawling interior. The front row offers the best space and comfort, with wide door openings and a ground clearance that makes it easy to hop in without any grunts. The seats are comfortable enough on long drives, although some fatigue creeps in on the passenger side due to the lack of lumbar support. Both front seats are power-adjustable and heated, and with the steering wheel also adjusting electrically, it’s easy to dial in a good driving position.

Move to the rear seats, and space becomes noticeably tighter for adults. At 168cm, my knees press against the seat in front, and even my eight-year-old asked me to slide the passenger seat forward this week. That said, he’s been mostly comfortable thanks to the wide door openings, lightweight doors and well-padded seats.

My son did point out that the tall window sills make it hard to see out, which could be a deal breaker for younger passengers. There are three top tether anchor points, but fitting three child seats across is unrealistic.

Storage is on the slim side, but the dual-opening centre console is clever, and there are two cupholders and drink bottle holders up front. The rear row only gets a single map pocket and two cupholders. A few more cubbies for things like sunglasses or keys would be welcome, as the cabin can quickly feel cluttered if you’re not careful.

Technology is neatly integrated. The dual 12.3-inch displays look sharp with clear graphics, and the touchscreen is responsive. The updated operating system isn’t a big leap forward, but it’s easy to use and the wireless Apple CarPlay and Android Auto work seamlessly. There’s also sat nav, a wireless charging pad, four USB-C ports, a single USB-A port and a 12-volt socket for charging.

The boot looks modest at first glance, especially with the floor set in its highest position, but it still swallowed a big grocery shop with no fuss. Officially, capacity is 364 litres, which makes it the smallest compared to its nearest rivals, although the adjustable floor helps with taller items or creates a handy nook for smaller ones.

A bigger drawback is the lack of a spare tyre as you only get a repair kit. For city drivers that might be fine, but for those of us who live regionally or do longer trips, a spare tyre is a must-have. On the plus side, the powered tailgate with kick function is standard here, whereas rivals make you pay extra for it.

The new Lexus UX300h is offered in three grades, and the grade tested here is the entry-level Luxury, priced from $55,370 before on-road costs. That positions it right in the middle of its rivals, with the Audi Q2 35TFSI S starting at $49,400 and the Volvo XC40 kicking off from $56,990.

The Luxury grade brings a solid list of standard equipment. While it won’t blow your socks off, it does offer good value-for-money compared to its premium competitors where a lot of features have to be added for additional cost. Highlights include powered front seats with heat function, synthetic ‘NuLux’ leather upholstery and trims, dual 12.3-inch displays and a upgraded OS for the multimedia system. You’ll also find a 10-speaker sound system and seamless wireless phone mirroring for both Apple CarPlay and Android Auto.

Technology extends further with built-in satellite navigation, Bluetooth, digital radio, reversing camera, two USB-C ports in each row, plus a USB-A port, 12-volt socket and wireless charging pad up front.

Practical features like keyless entry and start, dual-zone climate control, dusk-sensing headlights, updated daytime running lights, rain-sensing wipers, electrically adjustable steering wheel and a powered tailgate with kick function.

A three-year complimentary membership to the Lexus Encore program rounds out the package. Members gain access to the Lexus Connected Services phone app where you can customise your driver profile and have access to a digital key but there are a range of benefits from supporting partners like Westfield and Ampol to enjoy as well.

The MU-X has a 3.0-litre four-cylinder turbo-diesel engine, producing 140kW and 450Nm and it’s matched to a six-speed auto.

These form part of a proven powertrain and while the MU-X may not be the most dynamic vehicle to drive – it’s acceleration is sluggish rather than punchy – it has a real tractability that nullifies any other niggles.

It has part-time 4WD, with high- and low-range as well as various drive modes, rough terrain mode, and a rear diff lock.

The UX300h Luxury runs a hybrid setup that pairs a 2.0-litre four-cylinder petrol engine with two small electric motors. Combined, the system produces 146kW of power, and it drives through an electronic continuously variable transmission (eCVT). This powertrain sees it outmuscle the old UX250h by 15kW.

On paper, those new outputs sit neatly in the middle of this segment. Out on the road, though, the hybrid assistance helps the UX feel a little more sprightly than the numbers suggest. The electric motors give it an eager step-off from traffic lights and smooth power delivery around town, while the petrol engine takes over when more effort is needed.

It's a good combination for a little car.

Official fuel consumption for this MU-X is 8.3L/100km and that's on a combined cycle. 

On this test I recorded 10.2L/100km. I did a lot of high and low-range four-wheel driving, so that fuel consumption is not too shabby.

The MU-X has an 80-litre fuel tank, so going by my on-test fuel consumption figures you could reasonably expect a driving range of about 784km from a full tank. 

Fuel efficiency is a real strength. Lexus claims 4.2L/100km on the combined cycle, which is impressive against petrol-only competitors. With a 43L tank, you’re looking at a theoretical driving range of over 1000km between fills.

In my week of mixed open-road and urban driving, I saw a real-world figure of 5.0L/100km, and that’s without holding back on using the available power, which makes the claim feel very achievable.

In previous tests, the MU-X has been fine on road and more than adequate on gravel, dirt tracks, and during low-range 4WDing. But it’s been a jarring, skippy ride on irregular surfaces rather than as composed as it could – and should – have been. The culprit? Firm suspension, over-inflated tyres, too-tight trousers, who knows?

The good news is it seems like Isuzu has ironed out any issues in the suspension, minor or otherwise, because the MU-X is now is a lot better in terms of ride and handling than ever before. 

Off-road, the MU-X has always been a proven combination of its 3.0-litre, four-cylinder turbo-diesel engine, clever six-speed automatic transmission, and an off-road traction control system that's been increasingly well recalibrated through a number of generations. 

The engine is tractable and gruff, it has plenty of grunt and, as long as you're not driving like a complete hoon, you can usually get through most obstacles without a lot of fuss.

It's this mix of mechanicals and driver-assist tech that make the MU-X such an effective 4WD package. And there are a number of reasons for that. 

For one, that engine delivers plenty of torque down low and in the mid-range torque and that's crucial for four-wheel driving. 

And another thing, Rough Terrain Mode – like a beefed-up and fine-tuned off-road traction control – proves very effective because it punches torque to the wheel with the most traction – while wheel spin on tyres that aren't touching dirt is minimised – and that way it keeps the vehicle moving through obstacles with safe and controlled momentum. 

As I’ve noted before though, Rough Terrain Mode is not a magic all-conquering solution, but it is another handy addition to the MU-X’s off-road toolbox.

And the MU-X also has a rear diff lock to back you up – and that's another valuable component. 

The MU-X has approach, departure and ramp-over angles of 29.2, 26.4 and 23.1 respectively.

A listed 235mm of ground clearance is about standard for this kind of wagon but, as I’ve said before, it seems vulnerable in the underbody, side steps and its plastic mud guards. So the underbody may touch dirt, depending on how challenging the terrain is. 

Wading depth is listed as 800mm.

But, as always, with focused driving, you’ll have lots of fun and you'll minimise any superficial damage or scuff marks to the MU-X.

The MU-X has plenty of potential as a touring platform, but, if you’re planning to do any off-roading beyond well-maintained tracks, then get rid of its road-biased tyres and replace them with all-terrain tyres.

The showroom-standard tyres on this MU-X – 265/50R20 Bridgestone Dueler HTs – are okay, but not really up to scratch if tough 4WDing is what you’re keen to do. I’d prefer an 18-inch wheel and tyre package with decent all-terrains.

The MU-X has a full-sized underslung spare and in terms of packability, the MU-X X-Terrain has a listed payload of 605kg, GVM is 2800kg and GCM is 5900kg.

If you are considering using your MUX as a tow vehicle, it's handy to know that it can legally tow 750kg (unbraked) and 3500kg (braked), which is the standard for large four-wheel-drive wagons. 

Be aware though that, as with any other vehicles, once you're towing anywhere near the maximum weight, your payload is greatly reduced.

The UX300h Luxury proves itself to be a versatile little SUV. It offers ample power with prompt acceleration, making it easy to confidently take a gap in traffic or keep pace on the open road. It feels like a solid all-rounder that balances everyday usability with just enough grunt when you need it.

There are three selectable drive modes, though in practice they don’t feel dramatically different. The hybrid system can sometimes sound a little flustered at times as it switches between the two components, but it doesn’t translate into anything unsettling from behind the wheel. The actual driving experience remains smooth and predictable.

Ride comfort is another strength. The suspension does a good job of soaking up small bumps, and unless you’re on the highway in torrential rain, the cabin stays impressively quiet.

Visibility is mostly good, although the A- and B-pillars can occasionally intrude from the driver’s seat. It’s never enough to be a deal breaker, but worth noting. Where the UX really shines is in tight spaces because its 10.4m turning circle and compact dimensions makes it stupidly easy to park. The reversing camera is clear, though for a car wearing a luxury badge, it feels like a missed opportunity not to include a 360-degree camera as standard.

The UX300h Luxury comes equipped with Lexus Safety System+, covering the essentials and more. Standard features include lane keeping aid, lane departure alert, adaptive cruise control, traffic sign recognition, blind-spot monitoring, front collision warning, rear cross-traffic alert, rear seat alert, safe exit assist, ISOFIX child seat mounts, three top tether anchor points and tyre pressure monitoring.

Dusk-sensing headlights, rain-sensing wipers, and the restyled LED daytime running lights further improve visibility and overall safety.

The UX has a maximum five-star ANCAP safety rating from testing conducted in 2019, scoring highly across all individual assessments. While the updated model hasn’t yet been re-tested under the latest criteria, its suite of standard safety technologies and solid crash history should offer some reassurance.

The UX has autonomous emergency braking (AEB) with pedestrian and cyclist detection and is operational from 10 - 180km/h but it is normal to see this begin from 5.0km/h on competitors.

The MU-X has a six-year/150,000km warranty and seven years of roadside assistance. That warranty is okay in terms of years, but unlimited kilometres would be welcome.

Service intervals are scheduled for every 12 months or 15,000km, whichever occurs soonest. 

Capped-price servicing covers the first five scheduled services for 24MY and later vehicle models (up to five years/75,000km, whichever occurs first) – at a cost of $469 for each service.

The UX300h Luxury comes with a five-year/unlimited kilometre warranty, which is comparable to its nearest rivals, although we’re seeing increasingly generous terms from mainstream brands.

Servicing is straightforward thanks to a five-year capped-price program, with each service costing $595. The intervals are well spaced at every 12 months or 15,000km, whichever comes first.

This grade also includes a three-year complimentary membership to the Lexus Encore program. Membership brings access to the Lexus Connected Services phone app, allowing you to customise your driver profile and even use a digital key. Beyond that, Encore members enjoy perks with supporting partners, including Westfield and Ampol.

There's around 40 official Lexus service centres located around Australia but you can make use of its sister brand's (Toyota) service centres if you're in a pinch.