Isuzu MU-X vs Land Rover Defender

What's the difference?

The MU-X has plenty of appeal as a daily driver – dependable and it’s a proven 4WD wagon.

Does the 2.2-litre engine add anything substantial to the mix?

Well, it's better than the 1.9-litre, that's for sure, and there's a lot to like about this MU-X in terms of its off-road capability, driver-assist tech, standard features and all-round driveability. And, while the LS-T lacks the top-shelf polish of the X-Terrain, it’s still an appealing potential purchase.

But the 3.0-litre option is better because while the 2.2L is very effective off-road and general day-to-day driving, it lacks grunt and has to work that much harder and is that much noisier under load than the 3.0-litre in most driving scenarios, including 4WDing.

The Land Rover Defender Octa Black could well be the ultimate form of the Defender. There's also the combination of Land Rover style and utility, but with one of the best V8 powerplants gifted to it from BMW. The Black edition adds extra appeal and highlights how stealthily something this good can fly under the radar against rivals like the Mercedes-AMG G63.

In terms of appearance, the MU-X remains largely unchanged from the most recent iteration. And that’s a good thing. It’s blocky enough to be recognisable but sleek enough to remain inoffensive. Worth noting the door handles, window trims, front fender accents, roof rails, and side steps on the LS-T are gloss black.

Inside, nothing much has changed (other than a newly-introduced idle start/stop button) and, as such, the MU-X retains a low-key familiarity that makes it a comfortable space. Generally, design-wise, the MU-X more than holds its own against the likes of the Toyota LandCruiser Prado and Ford Everest.

Oh gosh yes, there’s a lot that’s interesting about the design of the Defender Octa Black. 

Land Rover absolutely nailed the look of the new Defender when it launched in 2020 and it's barely aged in the years since. 

I love its modern take on the original Defender design with its boxy styling that looks both prestigious enough to be waiting in the driveway of a castle, but also purposeful and practical enough to be sitting in a paddock on a farm.

The Octa is based on the 110 Defender four-door body style with five seats, but its muscular enhancements make it longer, wider and taller than a regular 110 Defender. 

The Octa Black has exactly the same dimensions as the Octa at 5003mm long including the tailgate-mounted spare wheel, 2105mm wide with the mirrors out, and 1995mm tall on the low suspension setting (air suspension can raise the vehicle much higher).

The Octa Black adds about 30 gloss black or satin black elements to the Octa and I’ve listed many of them in the features section above.

For me the highlights of the Black include the 20-inch forged wheels which look stylish and army tough, there’s also the black coating on the quad exhaust tips, while the blacked-out badging and lettering also gives this variant a carefully modified, stealthy look.

Inside I love the exposed screws in the door trim, and black dashboard hand rail. When the vehicle is switched off all of the black buttons lose their glowing icons, turning the cabin into an inky, luxurious, minimalist space.

I could go on about the safari windows overhead in the boot area, the thick carpet, and how the optional chopped carbon fibre looks like solid marble, but we need to move on. 

The interior has a familiar and practical feel about it and the cabin is an easy space in which to become comfortable. Controls are easy to locate and operate and charging options are numerous – a mix of USB-A, USB-C (front and second row) and 12V.

Storage places include recesses for the bits and pieces from your pockets, a deep-ish 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 also cupholders either side of the third row.

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

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

My camera guru/photographer/sergeant-at-arms, Glen Sullivan, reminded me that the third-row seats don’t have ISOFIX or top-tether points for child seats. Thanks, mate.

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 stowed away.

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 MU-X’s full-size spare (bravo!) is attached to its undercarriage.

The Defender Octa Black is practical by its design and intention. This is a large off-road SUV with boxy proportions and utility is as much a priority as luxury.

A five seater with no third row, the Defender Octa Black has an enormous boot at 972 litres and outstanding cabin storage throughout from large door pockets to stowaway areas, trays and hidey holes. There’s also a small fridge under the centre armrest between the front seats.

Space for passengers is excellent with ample headroom and rear legroom. I’m tall at 188cm and can easily sit behind my driving position. Upfront and sitting in the driver’s seat I have acres of room in the footwell, plenty of space for my legs to clear the steering wheel and lots of elbow room.

There are power outlets throughout including a 230V powerpoint in the boot, USB-C ports in the second and front rows, plus wireless phone charging up front.

How great it is to see big chunky physical dials for climate control and volume as opposed to just a media screen, which is the case with so many new vehicles.

Possibly the only impracticality of the Defender Octa Black is the drop down out of the cabin. Even on the lowest air suspension setting the step up and out of the cabin will be too big for some older people and younger children. 

The Defender Octa Black lists for $313,800 which is about $10,000 more than a standard Octa. The difference between them is purely cosmetic but the black elements add such a visual impact that $10K seems worth it for the unique customised look that distinguishes it from ‘ordinary’ Defender Octas.

The Black edition adds about 30 elements with either a gloss black or satin black finish. These include the Narvik Black paint, gloss black exhaust tips, 20-inch forged black wheels with gloss black calipers, there’s black badging and lettering, too.

Inside there’s ebony semi-aniline leather upholstery, plus black hand holds and dashboard crossbeam.

Then there’s all the standard equipment you’ll find on a regular Defender Octa. 

There's three-zone climate control, a Meridian sound system, Android Auto and Apple CarPlay, 11.4-inch touchscreen with sat nav, wireless phone charging and head-up display. 

The front seats are heated and cooled, while the second-row outboard rear seats are heated. There’s privacy glass in the rear windows, a panoramic glass roof, LED headlights and tail-lights and a proximity key.

Our car had several options fitted including the chopped carbon-fibre finisher which you can see on the front seat-backs and centre console, dual snorkels, tow-hitch receiver, mud flaps and black roof rails.

Is the value good? Yes' it's very expensive at more than $300k, but the price is quite a bit lower than the Mercedes-AMG G63 ($368,400) and the Porsche Cayenne Turbo GT ($376,200).

This MU-X has a 2.2-litre, four-cylinder, turbo-diesel engine, producing 120kW at 3600rpm and 400Nm between 1600-2400rpm and it’s matched to an eight-speed automatic transmission.

Worth noting the 3.0L MU-X has a six-speed auto and produces 140kW (at 3600rpm) and 450Nm (1600-2600rpm) while the outgoing 1.9L MU-X has a six-speed auto and produces 110kW (3600rpm) and 350Nm (1800-2600rpm).

While the 3.0-litre has always been unstressed in most driving scenarios – even low-range 4WDing – the 2.2-litre feels underpowered. More about that in the ‘Driving’ section below.

The MU-X has a part-time 4WD system which includes a dual-range transfer case (with high- and low-range 4WD) and a rear diff-lock. The driver is able to shift from 2H (two-wheel drive, high-range) to 4H (4WD high-range) while on the move up to speeds of 100km/h. The diff-lock may only be engaged when the vehicle is in 4L (4WD low-range).

The MU-X also has a switchable terrain mode system which tweaks the engine, transmission and traction control to suit the driving conditions. 'Rough Terrain' mode, like a steroids-enhanced off-road traction control, is king of these modes when you’re off the bitumin.

One of the Defender Octa’s biggest drawcards is its engine, a 4.4-litre twin-turbo V8 courtesy of BMW.

Yes this is a BMW-sourced V8 making 467kW and 750Nm. The same engine is found in BMW’s M5 super saloon and X5 M and it suits the Defender Octa Black so well you’d swear it was purpose built for the big SUV.

You might not know that there is also a mild hybrid system on board too, but it doesn’t drive the wheels and isn't really there to save fuel. Its function is to add even more grunt to the engine. 

Unlike Mercedes-AMG's G63’s V8, the Defender Octa’s V8 won’t traumatise the neighbourhood on start up or idle or even just cruising along. But push it hard and it changes its attitude from a powerful limousine growl to a wild NASCAR roar.

There are drive modes including a dynamic setting but it’s ‘Octa’ mode that makes the car special. It's is a high-performance off-road setting that does exactly what you’d think.

Of course the Defender is one capable off-road vehicle with low- and high-range four-wheel drive.

An eight-speed automatic transmission sends the drive to all four wheels smoothly and the paddle shifters allow quick changes up and down.

Official combined cycle (urban/extra-urban) fuel consumption for this MU-X is 6.7L/100km. The 1.9L MU-X offers 7.4L/100km while the 3.0L offers 7.6L/100km.

Actual fuel consumption on this test was 8.7L/100km.

The MU-X has an 80-litre fuel tank, so, going by that on-test fuel consumption figure, you should be able to get a driving range of about 920km. But remember, your fuel consumption may be completely different to mine because chances are you'll have friends, family pets, sporting equipment, camping gear, the whole kit and caboodle on board. I've only been carrying vehicle recovery gear, MaxTrax, and a first-aid kit, so I haven't had a huge amount of weight on board.

Nobody buys a large off-road SUV powered by a petrol V8 thinking it’s going to be super fuel efficient, right? Just checking, because the 4.4-litre petrol V8 in the Defender Octa Black needs feeding constantly, like some kind of huge, hungry animal.

My average fuel economy of 18.5L/100km (according to the trip computer) over nearly 500km of driving actually wasn't as high as I expected considering all the countryside I ran through combined with the urban warfare of heavy traffic. Still that’s much higher than the 13.1L/100km Land Rover says the Octa should do in combined driving conditions. 

Fortunately the Octa has a 90L fuel tank so you won’t have to fill up at every petrol station you see.

Before we launch into the off-roading section of this test, it’s worth noting the MU-X has always been decent on-road; composed, reasonably refined (for a 4WD wagon, anyway) and comfortable. And thankfully, with the 2.2-litre engine, not all of those characteristics have been thrown out the window.

It is quite noisy, especially under pressure when you have to do some heavy acceleration or when you have a bit of gear on board. When it has to work that bit harder than it usually does, it can become quite noisy. Admittedly, the 3.0-litre MU-X is also quite gruff, but there's an edge to the roughness in the 2.2-litre that is very noticeable on road.

This MU-X is quite sluggish off the mark, exhibiting a disconcerting lag under heavy throttle from a standing-start. And it’s far from the most dynamic vehicle to drive. But it has a tractability about it that manages to mostly negate these flaws.

Otherwise, the new eight-speed auto deserves credit as it’s slick and smooth in application and feels right at home in this wagon.

Now to off-roading. The MU-X is still very capable. In fact, even with the 2.2-litre engine, it remains one of the better-performing 4WD wagons straight out of the dealership, in terms of pure off-road capability.

The 3.0-litre MU-X is not the torquiest in this segment, but it offers ample pulling power available across a wide rev range – count on peak torque between 1600rpm and 2400rpm – and it delivers that pulling power in an even-handed fashion. The 2.2-litre MU-X has to work harder than its stablemate, and it’s noisier and harsher.

However, those characteristics don’t take away from how effective this MU-X is because it offers impressive off-road performance. It still has a decent amount of low- and mid-range torque, which makes dirt-road cruising and low-speed 4WDing easy.

The MU-X has part-time 4WD with high- and low-range 4WD gearing, a rear diff lock and overall it retains all of that off-road capability the 3.0-litre MU-X has been renowned for – so you don't lose any efficacy there.

The line-up’s off-road traction control system, which once was a bit patchy in its effectiveness, has gone through a couple of phases and it’s been recalibrated/tweaked over the years and it is much better now.

Of course, the MU-X also has Isuzu’s much-vaunted Rough Terrain mode (a form of early-acting off-road traction control which converts lost grip into torque for the wheels with grip), and it is smooth and effective, giving the driver better overall control in challenging terrain.

Some of this MU-X’s listed off-road angles appear shallower than the 3.0-litre MU-X’s – approach: 23.9 (3.0L = 29.2), departure: 26.4 (3.0L = 26.4) and ramp-over: 19.6 (3.0L = 23.1) – but, even if that is the case, it has very similar driving characteristics in low-speed, low-range four-wheel driving to its 3.0-litre stablemate.

If you drive with control and consideration, you shouldn't have any trouble tackling light to moderate 4WDing in this MU-X. It could even, if push comes to shove, handle challenges that may be considered by some to be on the edge of hard-core 4WDing – for a showroom-standard 4WD wagon anyway.

Ground clearance is 235mm and wading depth is 800mm, so there’s an adequate amount of clearance to work.

The MU-X – with a turning circle of 11.6m and a kerb weight of 2130kg (3.0L = 2185kg) – feels quite nimble on bush tracks.

This wagon’s wheel travel – how far the axle can move up and down relative to the chassis – has more than an adequate amount of flex, stretching its tyres close, if not all the way, to the dirt.

A noticeable trade-off is its 20-inch wheel-and-tyre combination, which is best suited to sealed surfaces and so are far from ideal for dirt-track touring. There’s an easy remedy, though. Buy a set of decent all-terrain tyres on 17- or 18-inch rims to replace the showroom-standard 265/50R20 Highway-Terrain tyres. If you are using your MU-X, avoid dropping pressures too much because you’ll risk sidewall pinches and punctures on these low-profile road tyres.

In terms of packability: the 2.2L MU-X has a listed payload of 670kg, whereas the 3.0L version offers 615kg.

The 2.2L MU-X can legally tow 750kg (unbraked trailer) and 3500kg (braked), so theoretically you can tow the same load as a 3.0-litre MU-X. But, as mentioned, the 2.2-litre engine feels underpowered, even in general day-to-day driving, so with a load and/or towing that’s an added burden.

For reference, the 2.2L MU-X has a listed gross vehicle mass of 2800kg and gross combined mass of 5900kg.

The Defender Octa Black is big but it only takes a week of driving before it feels like an extension of your body and becomes an easy and obedient thing to pilot.

The acceleration is strong with 0-100km/h coming in four seconds but it's how it handles that's really impressive.

Smart so-called '6D suspension' uses adaptive tech to keep the vehicle level, damping its desire to pitch forward under braking and preventing body roll in the corners. I tested this on my remote winding, bumpy test road and was amazed by this big monster’s ability to keep itself composed and flat despite the sudden changes in direction.

There was no off-road test for the Octa Black this time but we've been impressed with the capability of Defenders in our tough terrain tests in the past. The Octa Black’s air suspension can rise high enough to offer a maximum 323mm of ground clearance. Angle of approach is 40.2 degrees and departure is 42.8 degrees, while the ramp over angle is 29 degrees. Wading depth is 1000mm.

And if you’re towing, braked towing capacity is 3500kg.

We tested the Octa Black for its handling of both engaging roads but also its handling of suburban duties where it proved easy to pilot, towering over the traffic but still able to slip up tight streets and in and out of car parks (check the maximum headroom and keep the suspension low), along with the school run each day.

Built for off roading means visibility is excellent, from being able to see clearly where the vehicle begins and ends to the huge windows that means there’s hardly a blind spot.

That made parking easy as long as there’s a space large enough and trust me, even if you take your time to park, nobody will honk at you in this military-grade looking rig.

All the while the air suspension kept the ride comfortable and serene.

The Land Rover Defender scored the maximum five-star ANCAP rating when it was tested in 2020 and that applies to the Octa Black, too. The only catch is that ANCAP rating will expire at the end of 2026. The criteria is now much stricter to get five stars.

That said, of course the Defender is safe, just as cars given a five star rating this year won’t automatically be unsafe in six or seven years, but there will be newer and better safety tech.

Still the Defender has auto emergency braking (AEB), lane-keeping assistance, blind-spot warning and rear cross-traffic alert.

Occupant safety in crash tests also scored high, according to ANCAP.

For child seats you’ll find two ISOFIX points and three top tether anchors across the second row.  

The MU-X has a six-year/150,000km warranty and seven years of roadside assistance. Unlimited km in the warranty 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 MY24 and later vehicle models (up to 5 years/75,000km – whichever occurs first) – at a flat price of $469 for each service.

Isuzu Ute Australia has a nationwide network of more than 160 dealer sites.

Land Rover covers the Octa Black with a five-year, unlimited-kilometre warranty which is short compared to most mainstream brands but fairly common among the high-end makes.

Roadside assistance is included for five years, too.

A service plan is available with five years costing $4800. Again, quite common for prestige brands but expensive compared to the more mainstream makers.