Holden Colorado vs Isuzu D-Max

What's the difference?

The Holden Colorado Z71 is a pretty decent towing machine, handling all aspects of general load-lugging duties with a quiet reliable efficiency. In simple terms, it kept the whole ute-and-van combination trucking along nicely.

The Z71 is a solid Colorado package all-round with some welcome flashiness to its functionality.

The D-Max X-Rider has adequate appeal as a daily driver – it’s functional and comfortable – and it’s also working off a proven 4WD platform.

This mid-spec ute lacks the polish of higher-grade D-Max grades, but it may still entice those ute fans who want a workhorse with a tractable engine and don’t care at all about frippery.

Does that 2.2-litre engine add anything substantial to the package? No, and the potential fuel savings it represents don’t seem so likely as the 3.0-litre doesn’t use a lot more fuel than the 2.2-litre D-Max anyway – and the 3.0-litre version only costs another $2000 or so to buy.

The 3.0-litre D-Max remains the better option because while the 2.2L is effective off-road, it’s only reasonable in general day-to-day driving, as 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 Colorado is a good-looking unit, so it follows that the Z71, the Colorado line-up's top dog, should be the best-looking vehicle in the entire range. And it is. Look at the photos yourself and make up your own mind.

The Z71's black highlights everywhere, the roof rails, side steps and fold-away tonneau cover add functionality to the flashiness.

Under its slick exterior, the Z71 sits on a steel ladder-frame chassis.

There may be no mechanical differences between the Z71 and other similarly-powered Colorado utes, but this is not merely a sticker-pack special – this is something more substantial than that. Don't believe me? Keep reading.

Nothing much – if anything at all really – is different about this D-Max’s exterior compared to others in the stable.

Sure, the X-Rider has a tweaked front grille, 17.0-inch gloss black alloy wheels and black sports bar but those elements are mere frippery on top of what is already a tidy looking package.

The D-Max X-Rider is 5205mm long (with a 3125mm wheelbase), 1870mm wide and 1785mm high.

Inside, it is a clear uncluttered space, which is spot-on for this ute and part of the line-up’s rough charm.

The D-Max retains even an undeniable robust presence when compared to the more stylish Mazda BT-50 and Ford Ranger, or even rivals such as the Toyota HiLux.

The Z71 has a Colorado carry-over interior, which is nice and simple, with some Z71 branding stitched in the front seats.

For starters, there are grab handles for the driver and front passenger – I'm a big fan of grab handles.

The dash is a basic layout – but made family-friendly with expanses of tough plastic and soft-touch leather – and it has everything you need. The centre console houses an 8.0-inch colour touchscreen with Apple CarPlay and Android Auto and standard nav.

There is a USB port in the centre-bin, and there's a 12V socket in the back of that bin for back-seat passengers.

The cabin is reasonably comfortable; the front seats – in fact all of the Z71's seats – err on the side of firm rather than being well-cushioned. But, even in the back seat, when I sat behind my driving position, I had ample head- and leg-room.

There are the usual collection of storage spaces around the cabin – sunglasses, glove box, door pockets, seat-back pockets – but a long centre-bin lid impedes access to the cupholders in between driver and front-seat passenger, and there are no cupholders in the back seat's fold-down centre arm-rest.

There are shallow storage spots under the rear seats, one of which contains your jack etc.

Overall fit and finish is impressive without being spectacular, but that's fine with me.

The tray is 1484mm long, 1534mm wide (1122mm between the wheel-arches) and 466mm high. Back there, you get Premium DuraGuard Spray–on tub liner, which seems sturdy and durable, as well as four solid tie-down points.

The X-Rider is a solidly spartan mid-spec ute.

From its myriad durable plastic surfaces through to its high-grade cloth seats, this ute is booted and suited for the dirt and dust of real day-to-day life.

Sure, it misses out on some of the more appealing aspects of higher-spec D-Max grades – including a bigger 9.0-inch touchscreen, built-in sat-nav, and less-tinny nine-speaker audio system – but it remains steadfastly true to the spirit of Isuzu’s workhorses where substance wins out over style every time.

As in any good ute, the cabin has a comfortably familiar feel about it and it’s an easy space in which to spend lots of drive time.

The interior is adequately spacious with supportive seats upfront and a reasonably comfortable bench-style pew for the three back-seat passengers.

While the touchscreen system is a bit clunky in operation – it takes some time and effort to navigate your way through menus and sub-menus to reach the area you want (usually the driver-assist tech that you want to adjust), the general mix of controls (on-screen and real switches, buttons and dials) are welcome.

There are plenty of charging options – a mix of USB-A, USB-C and 12V upfront, and USB-A for the back row – and storage places include recesses for your wallet, keys etc, a deep-ish centre console, as well as dual cupholders upfront and cupholders in the back seat’s fold-down armrest, and bottle holders in the doors.

Back-row passengers get USB ports, directional air-con vents and shallow under-seat storage.

The tub is 1570mm long (at floor level), 1530mm wide (1122mm between the wheel-arches) and 490mm deep. It has an under-rail tub liner, two cargo tie-down points, and it has tailgate assist.

Our test vehicle had a soft tonneau cover, which is annoyingly fiddly to close at the top edge of the tailgate.

Tub options for D-Max owners include a tonneau or roller cover (which offers at least some degree of security from thieves, and protection from rain, mud, snow etc), or an Isuzu or aftermarket canopy, although a canopy impacts the versatility of the load space because once it’s an enclosed area it makes it more difficult to carry long, awkward and/or large loads in the tub.

The D-Max X-Rider is part of a nine-variant 4x4 line-up; there are five 4x2 variants. Some D-Max variants are not offered with the 2.2L four-cylinder turbo-diesel engine, while some are not offered with the 3.0-litre four-cylinder turbo-diesel engine – check with your dealership for clarification.

The 2.2L D-Max X-Rider crew cab ute (our test vehicle) has an RRP of $59,500 before on-road costs (at time of writing), with special offer drive-away pricing of $56,990, depending on location.

Our test vehicle has some accessories onboard including rubber cabin floor mats ($229.98), tow bar wiring harness – 12-pin flat ($490), tow bar and tongue kit ($1310), and an electric brake controller ($999.75), so, with accessories stamp duty ($151.49) also added to the price, the test vehicle costs about $60,170 drive-away.

Standard features include an 8.0-inch multimedia touchscreen system (with wireless Apple CarPlay and Android Auto), a 4.2-inch driver display, six-speaker audio system, full suite of driver-assist tech, and more.

The X-Rider also has a black sports bar, revised front grille and 17.0-inch gloss black alloy wheels. 

Exterior paint choices include Sunstone Orange mica, Moonstone White pearl, Basalt Black mica, Wolfram Grey metallic (on the test vehicle) or Mineral White. Premium paint costs $695.

Its price-tag may put it up against the likes of Toyota HiLux, Ford Ranger and its mechanical twin, the Mazda BT-50, and it manages to hold its own against those in terms of value for money.

The Z71 has a 2.8-litre four-cylinder turbo-diesel Duramax engine (147kW at 3600rpm and 500Nm at 2000rpm), six-speed automatic transmission, a part-time 4WD system and a rear limited slip differential.

The 2.2L D-Max X-Rider has a 2.2L four-cylinder turbo-diesel engine producing 120kW at 3600rpm and 400Nm between 1600-2400rpm and it’s matched to an eight-speed automatic transmission.

While the 3.0-litre D-Max has always been mostly unstressed in the majority of driving scenarios – even low-range 4WDing – the 2.2-litre feels underpowered.

It is noisy, especially under heavy acceleration or load. It has to work harder than the 3.0-litre and, again, it is noisy. Yes, the 3.0-litre D-Max is gruff, but there's a strained edge to the roughness in the 2.2-litre that is very noticeable while driving on sealed surfaces at speed.

Have I mentioned that it’s noisy?

The good news is that the eight-speed auto feels as slick and as smooth in application here as it does in this ute’s stablemate, the MU-X, and, as such, it feels right at home in this ute.

This D-Max 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 D-Max 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 bitumen.

Our dash display read 7.9L/100km, but we recorded actual fuel consumption on test of 9.7L/100km. It has a 76-litre fuel tank, so expect an approximate driving range of 753km (according to our on-test fuel consumption), factoring in a 30km safety buffer.

On our towing loop, of more than 200km total, the dash was showing 14.5L/100km, but we recorded an actual fuel-consumption figure of 15.5L/100km. Expect an approximate driving range of 460km (according to our on-test fuel consumption), factoring in a 30km safety buffer.

Official fuel consumption for this D-Max is 7.1L/100km.

Real-world fuel consumption on this test was 8.4L/100km.

The D-Max has an 76-litre fuel tank, so, going by that on-test fuel consumption figure, you should be able to get a driving range of about 904km.

But remember, your fuel consumption has the potential to be much higher than our tested figures because chances are you'll have family, friends, pets, camping gear, water craft, the whole kit and caboodle on board. I only carried vehicle recovery gear, MaxTrax, and a first-aid kit, so I didn’t have a huge amount of weight on board.

The Z71 has a steel ladder-frame chassis, double-wishbone front suspension and leaf-spring live rear axle, so it's more aligned with heavy-duty work than smooth on-road performance.

Having said that, the Z71 is quite settled over most surfaces, including highway bitumen and rough back-road backtop, and at most speeds – rather impressive for an unladen ute.

Steering is a bit floaty, with some play in it, and there is noticeable understeer on corners.

The engine is one of the torquiest in the current-day ute mob – only matched by V6 utes – and it delivers that torque quite evenly and smoothly across the rev range. The Duramax turbo-diesel can, however, be noisy, and because of that it seems like it's working hard, though it never feels too stressed, even when towing a caravan that has a caravan with a tare (empty) weight of 2600kg.

There's plenty of life in terms of acceleration with active pedal-feel but, when it comes time to pulling up to a fast stop on front disc and rear drum brakes, the brake pedals are rather spongy.

The six-speed auto is generally spot-on for all duties, although it did occasionally down-shift with an extra violence of action when it didn't really need to.

Ride and handling are pretty good, with its Aussie-tuned suspension (including traditional-ute leaf-springs at the rear) doing a decent job of sorting everything evenly, and it was only ever rattled by very severe bumps, wash-outs, and ruts at lower speeds, i.e. during low-range 4WDing.

The Z71's on-road performance and refinement are generally not as polished as segment leaders, but that's nowhere near a deal-breaker.

The D-Max has for some time been regarded as reasonable on-road - comfortable, composed, and somewhat refined for a 4WD ute.

However, while the 3.0-litre D-Max is gruff and laggy and yet retains a certain rough charm, the 2.2-litre version is simply noisy and sluggish and forgoes the charm.

This D-Max has to work harder than the 3.0-litre does, and it makes that abundantly clear with a caustic edge to the roughness in the 2.2-litre that is very noticeable on road.

It’s slow 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 its low-key appealing tractability almost manages to negate these flaws – but not quite.

As mentioned earlier, the eight-speed auto is a smooth operator, micro-managing the engine as best it can.

When it comes time to leave the bitumen and hit the dirt, this D-Max – with a kerb weight of approximately 2010kg and a not-insubstantial turning circle of 12.5m – feels nimble on bush tracks and it is still very capable.

Even though the 3.0-litre D-Max is not the ute segment’s torquiest, it offers plenty of pulling power across a broad rev range – with peak torque between 1600rpm and 2400rpm – and it delivers that torque in an even-handed way. It still has a decent amount of low- and mid-range torque, which makes dirt-road cruising and low-speed 4WDing easy.

One of the major differences between the two engines is that the 2.2-litre D-Max has to work that much harder than its stablemate, and, as a result, it’s noisier and harsher.

However, this D-Max has part-time 4WD (with high- and low-range 4WD), a rear diff lock and an effective off-road traction control system (which has been recalibrated over the years), so it still retains all of that off-road capability the D-Max has built its reputation on.

Ground clearance is 235mm and wading depth is 800mm, so there’s an adequate amount of clearance for most reasonable off-road challenges (for standard unmodified vehicles) and its listed off-road angles of 26.9 (approach), 23.9 (departure) and 23.3 (ramp-over) all check out.

This ute’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.

This D-Max’s 255/65 R17 all-terrain tyres (Dunlop Grandtrek AT25s on 17” x 7” alloy rims) are adequate for off-roading but an even more aggressive set of all-terrains would boost this ute’s off-road capability.

The general rule applies here as with any standard unmodified off-road vehicle: drive with care, control and consideration and you shouldn't have any trouble tackling light to moderate 4WDing in this ute.

The 2.2L D-Max has a listed kerb weight of 2010kg. In terms of packability, gross vehicle mass is 3100kg, so theoretically this ute has a payload of 1090kg (GVM - kerb weight = payload), but Isuzu has based that figure on the cab-chassis variant’s weight.

This ute’s payload total – after the weight of onboard accessories and a 200kg total of driver and passengers are subtracted – is 818kg, according to Isuzu’s own payload calculator.

The 2.2L D-Max can legally tow 750kg (unbraked trailer) and 3500kg (braked). It has a listed gross combined mass of 6000kg.

The D-Max has the maximum five-star ANCAP safety rating from testing in 2022.

Standard safety features include eight airbags - dual front, dual front side, dual full-length curtain, front knee and centre (far-side) - and a comprehensive suite of driver-assist tech including auto emergency braking (AEB), adaptive cruise control, lane keep assist, lane departure warning, a digital reversing camera and a tyre-pressure monitoring system.

The driver-assist tech, while mostly effective, can be annoying (for example, misreading/misjudging speed limit signs) and over the top in its reactions (with auto emergency braking biting hard out of the blue when it really needn’t), and it takes some time to work your way through the on-screen menus and sub-menus in order to switch off ADAS alerts.

Holden offers a five-year, unlimited-kilometre warranty across the Colorado range, with servicing required every 12 months or 12,000km. Capped price servicing applies over seven years/ 84,000km with the average annual cost over three years working out to be $405.

The D-Max has a six-year/150,000km warranty and seven years of roadside assistance. Unlimited kilometres in the warranty would be welcome.

A free inspection is pencilled in at the three-month or 3000km mark (whichever occurs soonest), then service intervals are scheduled for every 12 months or 15,000km, whichever occurs soonest.

Capped-price servicing covers the first five scheduled services (up to five years/75,000km – whichever occurs soonest) at a cost of $489 for each service.

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