Isuzu MU-X vs Jeep Wrangler

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 changes to this updated Jeep Wrangler are small but meaningful. The inclusion of airbags, the updated media screen, and a feisty engine which suits the plucky nature of this off-roader make it a better Wrangler than ever.  

Note: CarsGuide attended this event as a guest of the manufacturer, with travel, accommodation and meals provided.

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 Jeep Wrangler looks like a cartoon of a four-wheel drive, that’s how familiar and well-known the design is. It’s almost generic, like the word Jeep.

You could say the design is iconic, given that the roots of this SUV stretch back to the little Willys off-roader built for the US army in World War II. And to this day the slotted grille, pronounced wheel guards, short and upright windscreen, even the removable doors are still with us in this latest incarnation.

That’s why each generation of the Wrangler only sees very subtle tweaks to famous shape and look, in much the same way a Porsche 911’s design changes at the rate of dripping water reshaping a rock.

Changing the styling completely would destroy the look which connects the Wrangler to its past and the nostalgic appeal would be over. 

So, this update sees more than subtle styling changes in the form of a tweak to the grille with the addition of a metallic-look trim around each of the slots while the mesh insert now has larger openings.   

Along with this there’s a new front bumper. The Wranglers we tested had the optional heavy duty steel front bumpers.

There’s also some interior changes in the form of a new dashboard trim, horizontal air vents and then there’s the 12.3-inch media display which goes a long way to making the cabin look more modern.

Still, the interior is busy with buttons and switches in a design that seems to mix the look of heavy machinery controls with a prestige car. The Nappa leather of the Rubicon grade lifts the quality feel higher.

All Wrangler interiors also have an internal roll-over cage which covers the entire cabin, for the fixed metal roof and removable roof body style which are standard on the Overland and Rubicon.

Only the Rubicon is offered in a two-door and a four-door, while the Overland and Sport S are four-door only.

The Rubicon two-door looks cute and fun to my eyes, while the four-door versions look a bit more serious and beefy, but both definitely still give off tough and adventurous vibes.

The wheelbase difference between the two is as giant as it looks. The Rubicon two-door’s wheelbase is 2459mm while the four-door Rubicon’s, along with the Sport S and Overland, is 3008mm.

The Wrangler ranges in length from 4334mm for the Rubicon two-door to 4882mm for the four-door Wranglers. Width is the same for all Wranglers at 1894mm and the height ranges from 1879mm in the Rubicon two-door to 1901mm in the four-door versions.

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.

When we review most SUVs practicality is scored on things like legroom, storage space and boot size. But in the case of a vehicle with removable doors and roof, and a cabin that has one-way drainage valves so you can hose the interior out, practicality takes on a different meaning.

The Wrangler’s practicality seems focussed on serving adventurous folks in search of a muddy off-road expedition and, so, while there is storage it’s mainly nets for door pockets, moulded wells on top of the dash, and smaller hidey holes to makes sure loose items don’t get flung around the cabin.

Given the roof can be removed there’s also a lockable glove box and centre console storage box.

When it comes to cabin space the Wrangler’s interior feels a bit cramped. The footwells up front don’t offer much space and headroom throughout is restricted by the roll cage which stretches from the front to the boot.

The four-door Wrangler has five seats and good legroom in the second row, even for me at 189cm tall. As mentioned above, headroom is limited in places because of the safety structure. Boot space behind those rear seats is 898 litres.

The two-door Rubicon has four seats. The back ones aren’t the most spacious and the boot behind them is almost too small to mention at 365L, Two pieces of carry-on luggage wouldn’t fit back there and we had to put our bags on the rear seats.

The rear tailgate for all Wranglers is side-hinged (opening left to right) and splits to allow just the window section or lower part to open separately.

For charging and powering devices all Wranglers have two USB ports up front (one -A and one -C) and four USB ports in the second row (two -A and two -C). There are also two 12V outlets on board (front and rear).  

There are two cupholders, seatback map nets and directional air vents for the second row.

The Wrangler sits high and climbing into the rear seats might be a challenge for smaller kids or even fully-grown humans, but there are chunky handholds at the pillars for extra help.

So, the Wrangler has excellent practicality, but this is geared more to its intended purpose of adventuring off-road rather than the city commute and school pick-up.

The Jeep Wrangler range comes in three grades. There’s the entry-grade Sport S which can only be had with four doors, the Overland which is also a four-door and the top-of-the-range Rubicon comes as a shorter wheelbase two-door and the four-door. 

The Sport S replaces the Night Eagle as the entry-point into the Wrangler range and with a list price of $75,950 it’s $5500 cheaper, too. 

Above this is the Overland for $84,950 and at the top of the line-up is the hardcore Rubicon which is $83,950 for the two-door and $90,450 for the four-door.

This update sees all Wranglers now coming with a (damage and scratch-resistant) 'Gorilla Glass' windscreen and a 12.3-inch media screen. But each grade also comes with its own new features. 

The Sport S has been given heated front seats, a heated steering wheel and ambient cabin lighting. Meanwhile, the Overland now has power front premium 'McKinley' seats and soft spare tyre cover.

And finally the range-topping Rubicon receives Nappa leather seats and a forward-facing 'Trailcam'.

There are mechanical upgrades across the range, too, especially for the Rubicon and we’ll get to those in the engine and driving sections of this review.

As for the rest of the features, coming standard on the Sport S are LED headlights, 17-inch alloy wheels, proximity key and push button start, sat nav, Apple CarPlay and Android Auto, a nine-speaker Alpine sound system and dark tint windows.

Along with its new features the Overland also comes standard with all of the Sport S’s equipment plus a three-piece removable hardtop, 18-inch wheels and a leather-wrapped shifting knob and hand brake handle.

Then there’s the Rubicon which has all the Sport S features, but 17-inch wheels instead of the 18s and an enormous amount of engineering hardware that makes this grade the off-road king of the Wranglers, which we’ll get to.

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.

One of the biggest changes Jeep could make to the Wrangler without causing complete mayhem for fans is to the engine and even then there will be folks who don’t like what they’re about to read.

Deep breaths, okay? Right, so, in this update the V6 petrol engine has been replaced by a 2.0-litre turbo-petrol four-cylinder. 

At 200kW the new four-cylinder makes a smidge less power than the V6 but more torque at 400Nm. An eight-speed automatic transmission shifts gears and sends the drive to all four wheels.

If you’re a Wrangler fan you’ll most likely know about this engine swap, but you’re wondering how this four-cylinder feels.

The answer is, really good. Jeep has got it right. It’s a torquey, responsive engine that feels energetic and suits the Wrangler's personality well.

In the short time I’ve spent on and off the road I’m convinced this turbo-four will be a good companion wherever you decide to go.

And go pretty much anywhere you can, with all Wranglers being ridiculously capable off-road thanks to their ladder frame chassis, high- and low-range gears, outstanding ground clearance (233mm-257mm, depending on variant ), excellent approach angle (41.4 to 44 degrees, depending on variant) and a departure angle to match (37 degrees for the both Rubicons; 36.1 for the Sport S and Overland).  

The Rubicon comes standard with Jeep’s 'Rock-Trac' on-demand four-wheel drive system and this update adds a full float rear axle. Sport S and Overland grades have Jeep’s 'Selec-Trac Active' on-demand 4WD set-up.

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. 

The new turbo-petrol, four-cylinder means better fuel economy than the V6 it replaces. We have yet to test Jeep’s claims that after a combination of open and urban roads the four cylinder uses 9.2L/100km in the sport S and Overland grades and 9.9L/100km in the Rubicon.

In comparison, Jeep says the previous V6 uses 10.1L/100km in the Rubicon and 9.9L/100km in the Overland. Our own testing saw consumption closer to 13L/100km.

We’ll have the new Wrangler in our garage soon and we’ll be able to put the fuel consumption claims to a real world test.

In terms of range, the two-door Rubicon has a 61-litre fuel tank and in theory a range of up to 680km. The Sport S and Overland have an 81-litre tank and can get up to 880km, while the four-door Rubicon’s 81-litre tank should manage 830km.

Of course if you’re off-roading you’ll use more fuel and the range will drop accordingly.

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.

Every one of the Jeep launches I’ve attended over the past 15 years has involved a pretty decent off-road component and it’s clear the company has a lot of faith in its product.

This Wrangler launch’s off-road test had been scaled back due to days of flooding rain beforehand, but the section that was passable was enough to remind us of what we already know and that is the Wrangler is formidable.

A Queensland bush off-road course full of steep, muddy hills, ruts, rocks, dirt and slippery descents was still all there for us to test the Wrangler Rubicon four-door.

Fun and comfortable are the first words that pop into my head when recalling how the Rubicon fares. This is a super-capable beastie that feels planted, secure and adept at all times.

We tested low- and high-range four-wheel drive, locked the rear differential and let the hill descent mode do its thing and get us down the sides of hills that felt so close to vertical all we could see through the windscreen was the ground.

What's also clear is the new turbo-petrol, four-cylinder feels well suited to the job, with plenty of torque along with a feisty and responsive nature that fits the Wrangler better than the old V6.

There was also plenty of time spent on the road in the four-door Rubicon and its smaller two-door sibling. And was here it was also super clear the Wrangler felt like we’d taken it out of its natural habitat.

At 110km/h on the motorway the two door Rubicon feels light and floaty in its suspension, with steering adjustments having to be made constantly, like actors pretending to drive cars in movies, as the Wrangler wanders around in its lane. The Wrangler wander is a known trait and isn’t specific to this updated car. 

And even though our launch drive took us on some great winding country roads which would have been perfect for a Mazda MX-5, the Wranglers found the fast tight turns difficult to handle.

I’m sure I heard a sigh of relief from our Rubicon as we pulled off the road and selected low-range four-wheel drive before bouncing up what looked to be a sheer cliff, with ease.  

Of course, our Adventure Expert Marcus 'Crafty' Craft will put the Wrangler though its paces once we have one in the CarsGuide garage.

The Jeep Wrangler has a three-out-of-five star ANCAP rating from testing in 2019. This isn’t an adequate safety score for a modern vehicle and the relatively modest advanced safety tech compared to other new SUVs and its structural integrity in crash tests caused ANCAP enough concern to award it lower scores.

Surprisingly the ANCAP report scored its child occupant protection at 80 per cent which is excellent.

This update to the Wrangler now adds curtain airbags which cover the front and second rows. Along with these there are dual front airbags plus safety tech which includes AEB (city and inter-urban) and blind spot warning. There’s also adaptive cruise control and front and rear parking sensors.

For child seats you’ll find two ISOFIX and three top tether mounts across the second row of the four-door variants.

The standard full-sized spare wheel is mounted on the tailgate. 

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 Wrangler is covered by Jeep's five-year/100,000km warranty, which is off the mainstream market standard of five years/unlimited km.

Service intervals are recommended every 12 months and 12,000km and service prices are capped at $399. Jeep also offers lifetime roadside assistance if you service your Wrangler though Jeep.