Isuzu MU-X vs Citroen C3 Aircross

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.

It's a good car, no question. Individuality is key to Citroen's brand appeal and you get that, too. A comfortable cabin, plush ride and hot damn, it's way too expensive, which is a crying shame. You could argue - as Citroen's product planners probably have - that it doesn't help to offer one in the mid-$20K mark because it won't make much money because so few people will buy it. Drop it at a premium, only lose a few opportunistic buyers but make more money per unit with committed fans? Why not, I guess?

Like most French cars, I'm glad it exists for weird French car fans like me to consider.

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.

As you might imagine, it's an individual design. Lots of Cactus cues, like the roof rails, bluff front end and stacked headlights Hyundai, uh, appropriated for the Kona. Curiously, no 'airbumps' along the side despite the C3 hatch having them...

The 17-inch wheels somehow look tiddly given the airspace over the wheels and I can report that black is not really this car's colour, even with the contrasting white roof and weird Mazda 121 Shades special edition venetian blind treatment on the quarter window. Bit of an '80s throwback there for you.

Lots more Cactus inside though, starting with the brilliant front seats, squared-off steering wheel and funky air vents. The little tray on top of the glove box is good, but it isn't rubber-lined, so that's annoying.

The Top Gun handbrake is hilarious but apart from the texturing of the fabric on the seats, it's a tad dark below the windowline. 

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.

Even for a little car, the Aircross could do better. The lack of a proper cupholder provision for the car - a solitary spot at the rear of the centre console - is mildly baffling until you remember that this car is from France. The French hate a cupholder but, obviously, you can fit wine bottles in the doors.

It's worth repeating just how comfortable and supportive the front seats are on any given journey. Broad but supportive and somehow perfectly sprung, I would cheerfully rip out most other front seats and replace them with these.

The rear seats are less of these things and anyone who forces anyone to use the middle seat should be ashamed of themselves. The headroom is good back there, though.

The boot is a big one for the size of the car, swallowing 410 litres and expanding to 1289 litres with both rear seat sections folded.

A perennial Citroen problem is the price - at $32,990, the tiny SUV is doing battle with cars that are really a size up, coming in closer in size to the Venue than, say, the ASX.

That Yaris Hybrid price (we're all still reeling from that number) scores you a 17-inch alloys, a six-speaker stereo, climate control, front camera, reversing camera, keyless entry and start, front and rear parking sensors, cruise control, sat nav, halogen headlights (yep, you read that right), head-up display, leather wheel and shifter, auto parking, auto wipers and headlights, wireless charging pad and a space-saver spare.

The central touchscreen is annoying in that there are almost no hardware switches for functions like climate control. The software is a bit on the slow side, too, but you do get Android Auto and Apple CarPlay. The stereo is fine.

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 great engines in mass-produced road cars today has found its way under the bonnet of the Aircross. Peugeot-Citroen's 1.2-litre three-cylinder turbo is a cracking engine, serving up 81kW/205Nm through a six-speed Aisin-sourced auto to the front wheels.

While the 11.8-second dash to 100km/h is, uh, leisurely, the torque figure means that on the move it's not as sluggish as that number or its 1200kg kerb weight would suggest.

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.

Citroen claims a handy 6.6L/100km on the combined cycle and my week with the fizzy Frenchie included a trip over the hills and far away as well as a lot of suburban running. 

The digital display on the dashboard read 7.3L/100km, which isn't bad going without stop-start. It does require 95 RON premium fuel, though.

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.

French cars have a very specific audience in this country, which includes weirdos like me. I've owned Peugeots and Renaults and loved every second of it.

Top of my list after my darling baby boy wrote off our family car (which was bought for him to drive), the Cactus was close to the top of the list. This fandom isn't blind, though - I know what I'm getting myself into having to dispassionately assess their faults and foibles as well as their triumphs and tangible benefits.

If I'm being honest - and it's just you and I here - I didn't think I'd like the C3 Aircross, there was just something about its SUV pretensions. I can't say the looks grabbed me and the inexplicable exclusion of the airbumps made me irrationally cross.

But once you slip behind that square-ish wheel into the comfortable embrace of those excellent seats, you forget the aesthetics (which did grow on me, even in black). 

The 1.2 turbo is, as ever, eager to please and well-matched to the six-speed auto. The two work well together to get you moving, although the engine is the noisiest installation I can remember. In the Peugeot 308, it's virtually silent.

On the move, the lovely ride also impresses, soaking up the bumps (except those aggressive rubber speed humps in shopping centre car parks) while keeping body roll to an acceptable minimum.

It's perfectly fine in the suburbs, even with its limited power. Breaking into traffic can be a bit of a moment, but there are slower cars about.

Where the Aircross is really good is out on the freeway. It's quiet for such a small car and that torque figure makes joining the M4 freeway (west out of Sydney) fine, and it cheerfully kept up on the climb up the Blue Mountains and the brakes and transmission were great down the other side.

Citroen is unashamedly about comfort over handling, but the trade-off for the comfort is pretty good in that it still handles despite a plush ride and being up on stilts.

Along with six airbags, ABS, stability and traction controls, the Aircross has low-speed AEB (up to 30km/h), blind-spot monitoring, lane departure warning, driver attention monitoring and speed sign recognition.

Three top tether anchors and two ISOFIX points complete the picture with a five-star Euro NCAP rating dating back to 2017. There is no corresponding ANCAP score, despite the agreement between the two agencies.

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.

Citroen offers a class-competitive five-year/unlimited kilometre warranty with a five year service plan if you want to pre-pay.

That plan costs a stiff $2727 for your five visits (or every 12 months/15,000km). That's nearly three times what you'll pay for a C-HR or about $400 more than a Mazda CX-3.