Mazda BT-50 vs Holden Colorado

What's the difference?

The XTR LE adds polish to the BT-50 line-up, in more ways than just its silver metallic paint and highly buffed accessories. It also has exceptional fuel economy and is equally competent as a suburban daily driver, tradie’s workhorse and weekend escape machine, with robust load-carrying and towing ability. For those wanting an upmarket version of the popular XTR, the LE has plenty of appeal. 

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 XTR is a happy medium between the work-focused XS and XT models and higher-grade GT, SP and top-shelf Thunder offerings, so the additional equipment that comes with the LE enhances the appeal of this popular model grade.

The bull-bar integrates with the BT-50’s safety systems ensuring crumple zones, airbags and driver assistance systems are not compromised. 

This bull-bar design also ensures no adverse effect on engine and transmission cooling and its single hoop is ideal for mounting extra driving lights.

The load tub-mounted sports-bar includes an integrated brake light for enhanced safety, while the heavy-duty tub-liner protects against dents and scratches.

The XTR interior has a quality look and feel with a tasteful blend of piano black and satin chrome highlights on the dashboard and door linings, contrasting fabric seat trim, exposed stitching along numerous seams and adjustable centre console a/c vents for rear seat passengers.

Driver and front passenger get comfortable bucket seats and the rear seating is also accommodating, with ample head and kneeroom even for tall adults. 

However, shoulder room is tight when travelling three-abreast, so like most dual cabs of this size it’s most comfortable as a four-seater.

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.

The addition of the LE’s accessories adds 81kg to the XTR’s kerb weight, which increases from 2030kg to 2111kg. As a result, the payload rating must drop by the same amount, from 1070kg to 989kg, to avoid exceeding the vehicle’s 3100kg GVM. 

The LE retains the XTR’s class-benchmark 3500kg braked tow rating but to keep below its 5950kg GCM (how much it can legally carry and tow at the same time) while doing that, the payload limit would have to be reduced by a sizeable 650kg. 

Alternatively, you could lower the trailer weight limit by the same amount (to 2850kg) and keep the full payload, which is not only more practical but also safer for towing.

The lined load tub is 1571mm long, 1530mm wide and 490mm deep with 1120mm between the wheel housings, which means it can’t carry a standard Aussie pallet but will take a Euro. There are four sturdy load anchorage points.

Cabin storage includes a large-bottle holder and bin in the base of each front door. The dash offers a closable compartment to the right of the driver’s knee for small items, upper and lower glove boxes and an overhead glasses holder. 

The centre console has an open tray at the front, dual small-bottle/cup-holders in the centre and a small box at the rear with a contoured lid that doubles as a driver’s elbow rest.

Rear passengers get a large-bottle holder and small bin in each door, plus pockets on the front seat backrests and two pop-out cup holders in the fold-down centre armrest. So, in total that’s four large-bottle holders and six small-bottle/cupholders. 

The 60/40-split rear seat base-cushions can also swing up and be stored vertically if more internal load space is needed. This also reveals two underfloor compartments with lids for keeping valuables out of sight, so there are plenty of places to store things.

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 Z71 auto 4x4 dual-cab has a list price of $57,490 MSRP. Our test vehicle is $59,260 MSRP because, over and above its comprehensive list of Z71 features (and those from cheaper variants), it has an electric brake controller ($740), and a towing package ($1030).

The Z71-specific features include a heap of style-based stuff, such as black fender flares, new front fascia, roof rails, and stickers on the bonnet, as well as 18-inch grey alloys (on Bridgestone Dueler H/Ts), sailplane sports bar, black highlights everywhere – including exterior door handles, mirrors and tailgate handle.

But the Z71 buyer gets plenty of useable real-world stuff such as roof rails, soft-drop tailgate, fold-away tonneau cover, and decent underbody protection.

There's also a leather-wrapped steering wheel and leather seats.

It has a 2.8-litre four-cylinder turbo-diesel Duramax engine, six-speed automatic transmission, a part-time 4WD system and a rear limited slip differential.

Bonus: there are plenty of genuine Holden-designed, -engineered and -tested accessories, including frontal protection bars, LED light bars, extended sports bars and more, that are probably available for your Colorado.

The Isuzu-sourced 3.0-litre four-cylinder intercooled turbo-diesel is a refined and proven performer, producing 140kW at 3600rpm and 450Nm of torque which peaks across a 1000rpm-wide band between 1600-2600rpm.

This is paired with a refined Aisin six-speed torque converter automatic, offering fast but smooth shifting and intelligent protocols that prompt automatic downshifting to assist with engine-braking on steep descents. 

It also has sequential manual-shifting plus overdrive on the top two ratios to optimise fuel economy during highway driving.

The part-time, dual-range 4x4 transmission has 2.482:1 low-range reduction and a switchable locking rear diff.

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.

Mazda claims official combined cycle consumption of 8.0L/100km which was close to the 8.4 showing on the dash display at the end of our 276km test. 

Both were close to our own figure of 8.7 calculated from fuel bowser and trip meter readings, which is outstanding single-digit economy for a 4x4 dual-cab ute weighing more than two tonnes. 

So, based on our numbers, you could expect an excellent real-world driving range of around 870km from its 76-litre tank.

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.

There are big handles on the front windscreen pillars to assist entry and it’s easy to find a comfortable driving position given the spacious cabin, height/reach adjustable and leather-wrapped steering wheel, big left footrest and adequate adjustment in the driver's seat which includes variable lumbar support. However, some rake adjustment in the seat base would be welcome.

It has solid build quality with low engine, tyre and wind noise. All-round vision is good, enhanced by useful driver aids like blind-spot monitoring and a reversing camera. 

Our only criticisms are an annoying glitch in the design of the driver’s sun-visor, which clips the edge of the rear-view mirror enough to dislodge it each time the visor is swung down. 

And there are no rotary dials on the media screen for quick and easy adjustment of audio settings. Buttons are not as user-friendly.

Handling is sure-footed for a high-riding 4x4, the braking is reassuringly strong (particularly under load) and steering feel is amongst the best in class. 

The engine has good response and never feels sluggish in city and suburban driving thanks to its broad spread of torque, enhanced by an automatic transmission that generally gets the best out of this engine without the need to manual-shift.

It’s also a comfortable and economical highway cruiser. With the overdriven top gear and full torque converter lock-up, it can consume long distances with minimal effort as the engine requires only 1600rpm to maintain 110km/h. The adaptive cruise control works well.

We didn’t forklift a load into the LE as we have already tested the standard XTR on which it’s based with a 950kg payload, which was only 40kg under the LE’s maximum rating. 

On that occasion the leaf-spring rear suspension compressed 75mm, but there was still more than 30mm of stationary bump-stop clearance remaining. That ensured it never bottomed-out, floating over large bumps and through dips with ease.

We have also towed a 2.5-tonne dual-axle caravan with an XTR during which it also excelled, so in LE form it’s not only a comfortable daily driver but a competent load-hauler, too.

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 Colorado line-up has a five-star ANCAP rating as a result of testing in 2016.

Safety gear includes seven airbags, front and rear parking sensors, a reversing camera, Forward Collision Alert), Lane Departure Warning, a tyre-pressure-monitoring system, Hill Descent Control, Hill Start Assist, Trailer Sway Control and Roll Over Mitigation.

The BT-50 is covered by a five-year/unlimited km warranty.

Scheduled servicing is every 15,000km or 12 months, whichever occurs first. 

Minimum combined cost is $2404 for the first five scheduled services, for an annual average of $481.

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.