Mazda BT-50 Problems

Are you having problems with your Mazda BT-50? Let our team of motoring experts keep you up to date with all of the latest Mazda BT-50 issues & faults. We have gathered all of the most frequently asked questions and problems relating to the Mazda BT-50 in one spot to help you decide if it's a smart buy.

Used Mazda BT-50 review: 2006-2009
By Graham Smith · 21 Jan 2011
Mazda shunned the notion that a ute had to look like a car to appeal to recreational users who were buying one-tonne utes like the BT-50 in increasing numbers for their weekend getaways. The company believed a ute should still look tough and purposeful, and held true to that belief when designing the replacement for the old B-Series. Beneath the tough exterior, however, Mazda worked hard to ensure the BT-50 had a measure of the 'Zoom-Zoom' that proved so successful in reviving the image of its passenger cars. MODEL WATCH The BT-50 was an all-new model with barely anything carried over from the outgoing B Series.  The model range consisted of 4x2 and 4x4 models, with three body styles - single cab-chassis, Freestyle extended cab and dual-cab utility - and three levels of equipment, the base model DX, the DX+ and the range-topping SDX. It had a strong, purposeful look that gave it a solid, substantial image, the result of raising the belt line 30 mm and the sides of the cargo bed by 60 mm.  The cabin was generally a pleasant place to be, the only criticism was that it lacked elbowroom compared to most of its rivals, all of which had grown larger with the changeover to the new generations models, of which the BT-50 was one. Mazda offered two diesel engines depending on the model. The entry-  level two-wheel drive single cab-chassis had a 2.5-litre common rail double overhead camshaft four-cylinder turbo diesel engine that produced 105 kW at 3500 revs and 330 Nm at 1800 revs. All other models were powered by a 3.0-litre common rail double overhead camshaft four-cylinder intercooled turbo diesel.  When on song the 3.0-litre developed 115 kW at 3200 revs and 380 Nm at 1800 revs, up by 33 kW and 109 Nm from the engine in the outgoing model. Most models had a new five-speed manual gearbox, but there was also the option of a five-speed auto in the range topping SDX Dual Cab.  The BT-50 was built in both two-wheel drive and four-wheel drive forms, the latter utilising a dual range transfer case and limited-slip rear diff. On manual models the transfer case shift was manual, and they had remote free-wheel hub lock mechanisms, while those with auto transmissions had an electric shift allowing "on the fly" shifting between two and four-wheel drive.  Underneath, the BT-50 sat on a beefed-up ladder frame chassis. Larger front and rear shocks, and longer rear leaf springs improved the ride without affecting the BT-50's capacity for work.  Mazda chose to stick with nut-and-ball steering instead of following the trend to rack-and-pinion; the result was a rather large 12-metre turning circle. Brakes were a mix of disc front and drum rear, but with improved pedal feel and braking efficiency. ABS antilock brakes and Electronic Brake Force Distribution were available on all but the entry 4x2 single cab-chassis model. The BT-50 would carry a payload of up 1430 kg, 59 kg more than the old B Series, and would tow up to 2500 kg (braked), up from the 1800 kg of the B Series. IN THE SHOP The BT-50 causes few concerns for owners, the only complaints that have come to Cars Guide relate to the fuel consumption and clutch life. Generally used to tow caravans or heavy trailers, and often using four-wheel drive, both are issues that all one-tonners can suffer from. The fuel consumption tends to be higher than new, first time owners expect.  Many first time owners also ask a lot of their one-tonners by expecting them to tow heavy loads. If planning to use a BT-50 as a tow vehicle hauling a caravan or the like consult a towing specialist for advice on set-up, particularly if the vehicle is equipped with auto transmission.  Also consider having the auto serviced before leaving on a long trip with a load on the back. Make the usual checks for regular servicing; oil changes are critical for a long engine life.  Look for evidence of a hard life, towing, off-road or on a worksite. IN A CRASH Dual front airbags and seat belt pretensioners were standard across the range.  ANCAP gave the BT-50 three stars when it was tested. UNDER THE PUMP Mazda claimed the 2.5-litre models would sip fuel at the rate of 8.3 L/100 km, they also claimed the 3.0-litre models would average 9.2-10.4 L/100 km.  When tested by Cars Guide the 3.0-litre manual dual-cab ute returned an impressive 8.8 L/100 km average in a mix of city and country driving. OWNERS SAY Some owners have complained about the fuel consumption of the BT-50, but Mike Bradshaw told Cars Guide that he got an average of 10.0 L/  100 km from his 2009 model on a four-month long trip through the WA and the Northern Territory. Mike said that it was loaded to 2.6-  tonne, using four-wheel drive, and with the air-conditioning on. Frank Murray has done 21,000 km in his 2008 3.0-litre BT-50 and they have been trouble free, but he is concerned about the clutch life of the BT-50 after hearing stories of others having clutch issues. One owner, he said, was on his third clutch in 50,000 km, and another had to replace one at 40,000 km. LOOK FOR Tough truck looks Improved refinement Skinny cabin Diesel economy Towing performance THE BOTTOM LINE Performs well, is comfortable, quiet and economical, but a little narrow in the cab. 82/100
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Mazda BT-50: Can I replace the tray with a 1997 HiLux tray?
Answered by Graham Smith · 08 Mar 2011

There’s no reason why it couldn’t be fitted, measure the chassis widths first and then work out what you need to do to adapt the old tray to the new vehicle.

Mazda BT-50 2009: High fuel consumption
Answered by Graham Smith · 07 Apr 2011

As Mazda pointed out to you the fuel consumption figures they publish are the results of laboratory tests mandated by the government. Every carmaker has to do the test and publish the results on a sticker on the windscreen of the car. As such it shouldn't be taken as fact that you will get the same figures when you drive the car in real life. The figures are given as a guide and for you to use when comparing one vehicle with another. There are many things that affect fuel economy, so you need to check everything that might cause your consumption to be higher and make sure you are doing everything you can in your driving environment to minimize your fuel consumption. Having done all of that it does seem that your vehicle is using too much fuel, as you say. I would engage your dealer and ask that he set up a fuel consumption test that measures the actual amount of fuel you are using so that both you and the dealer are in agreement about the fuel being used. You will then have a common basis on which to discuss what action you and the dealer could take going forward.

Mazda BT-50 2010: Clutch shudder
Answered by Graham Smith · 02 Feb 2012

It is a relatively common complaint with the BT-50 when towing and we get quite a lot of complaints from Navara owners as well. The answer seems to be that the clutches fitted at the factory are marginal for heavy-duty use, and the answer from mechanics we've spoken to is to fit heavy-duty aftermarket clutches.

Mazda BT-50 2011: LPG, CNG, or LNG?
Answered by Graham Smith · 25 Aug 2011

There are a number of heavy trucks running dual-fuel systems with a blend of diesel and natural gas, on some the gas is compressed (CNG) and on others it's liquefied (LNG). There are also other heavy truck systems that use diesel and LPG. We have reported on all of them over the past couple of years. In the case of light commercial vehicles the systems employed use diesel and LPG, substituting LPG for diesel, and as you say it needs to be very carefully controlled. The more LPG you use the more power you will get, but if it's not well controlled you run the risk of damaging the engine and that's very costly.

 

Mazda BT-50 2011: Cam belt breakages
Answered by Carsguide.com.au · 29 Dec 2011

Mazda tell us they have come across cam belt failures on the BT-50, but that it wasn't what they would refer to as a common concern, and not one they consider to have an abnormal rate of failure. From that you could deduce that it's not an unusual failure, but the failure rate isn't sufficiently high to do anything about.

Mazda BT-50 2012: Common-rail diesel rattle
Answered by Graham Smith · 24 Aug 2012

A lot of the new generation of common-rail diesels rattle cold, no matter the brand. They all use the same fuel-injectors, which appear to be the cause of the problem, and there doesn't appear there's much that can be done about it.

Mazda BT-50 2011: Should I install a gas injector?
Answered by Graham Smith · 18 Aug 2011

I would urge caution. These systems work by substituting a percentage of the diesel fuel with LPG and do deliver more power or better fuel economy depending on how you drive the car. The general idea is that you don't have to depress the throttle as far to get the same performance and you can then realize some fuel consumption savings, but I have had quite a number of reports of serious engine meltdowns because the driver simply couldn't resist the temptation to keep the foot down on the throttle. My concern is also that there isn't the same experience with these systems as there is with dual-fuel systems on petrol engines, so they're more exposed to problems. Before you do it talk to other owners about their experience with the systems.

Mazda BT-50 2011: Fuel economy
Answered by Carsguide.com.au · 06 Jan 2011

Comparing the fuel consumption of one vehicle to another can be tricky, even though they might seem identical. It can come down to the driving style, the terrain covered, tyre pressures, roof racks and bullbars fitted, size of trailer/caravan being towed etc. What appears obvious is not always so.

Mazda BT-50: Is the timing belt unreliable?
Answered by Carsguide.com.au · 08 Dec 2011

We haven't heard of belt failures like you report, but it would be good to hear from any of our readers who have suffered the problem. It sounds like a serious one.

Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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