Mazda Problems

The most common cause of a noise like this is likely to be a worn throw-out bearing, also known as a release bearing. Like most bearings, this component is designed to allow interaction between a moving surface (in this case the clutch which is turning at engine speed) and a stationary one (the clutch fork that physically disengages the clutch when you stand on the clutch pedal).

If this bearing becomes contaminated, rusty or just plain worn out, it can begin to emit the sort of sound you’re hearing. Why doesn’t it do it when the clutch pedal is pressed? Because the springs in the clutch are loading the bearing and taking the wear (or slack) out of it. When you release the clutch, the bearing relaxes and is free to make its noise again. Sometimes the reverse is true, and depending on where precisely the wear is located, the bearing makes the most noise when it’s loaded by the clutch springs. Either way, it’s a gearbox-out job, but beyond that it’s not a difficult task for a workshop.

It sounds like you’ve tried pretty much everything here, but I have a few suggestions. Have you cleaned out the inlet manifold? The combination of soot and oil mist that gets recycled back through the Mazda’s engine (and a lot of modern turbo-diesels are the same) can cause all sorts of poor running conditions including surging and mis-firing. I know you said you’ve disconnected the EGR valve, but this build-up could already have occurred.

What about the fuel system? You said you’ve replaced the injectors, but have the fuel pumps been checked for flow and pressure? What about the fuel return line? Is it blocked and causing an obstruction to the fuel flow below 80km/h? What about the fuel pick-up inside the tank? A split or damaged pick-up can allow air into the system and cause all sorts of grief.

Also, this generation BT0-50 used throttle-by-wire. Many owners didn’t like the operation of the standard set-up and changed to an adjustable system that allowed them to soften (via a dial on the dashboard) the throttle action for off-road use. Has your vehicle been modified like this? Even if it hasn’t, the standard throttle set-up could be faulty and causing the problems you’re seeing.

The fact that the vehicle operates perfectly in some situations leads me to suspect an electronic or fuel supply problem. If it was a major mechanical issue such as a burned valve or a major mechanical glitch, the engine would likely not run properly at all.

While the Mitsubishi Outlander is spacious, reliable and easy to drive, our experience testing it against rival medium SUVs have found it to be noisy and a little too firm riding to be truly comfortable and relaxing. At your price point, there are better alternatives out there. 

Have you considered a Mazda CX-5? In petrol or diesel, we have found it to be a superior and more economical proposition, and is definitely quieter and more refined. Plus, the Mazda's all-wheel-drive system is more sophisticated and better at dealing with loose surfaces like sand.

A late-model (post 2014) S5-series Subaru Forester 2.5i petrol is far more economical than the earlier iterations, since it switched to a more efficient CVT continuously variable transmission. And there's also the 2.0D turbo-diesel which is economical. This, too, is a fine SUV on-road or for light off-road driving.

Finally, the Nissan X-Trail diesel is a roomy and capable choice, especially from 2017, when it received a 2.0-litre turbo-diesel to replace the older 1.6L unit.

As the BM-series flagship back in 2014, the Astina offers more luxury and safety features than the SP25, so we'd settle for that, especially as it's a bit cheaper and has fewer kilometres on the odometer.

But if the newer car is the Series II facelift from August 2016 onwards, then this model - known as the BN - might be a better buy since it brings significant improvements.

These include Autonomous Emergency Braking Reverse (AEB when driving backwards), Blind-Spot Alert and Rear Cross Traffic Alert, as well as revised steering, shock absorber, anti-roll bar, and rear suspension components to improve handling and ride qualities, more sound deadening to eliminate known noise paths (a criticism of the earlier Mazda 3s), larger door pockets, an electronic parking brake instead of a levered handbrake, cleaner instrumentation dial markings, a redesigned and more user-friendly steering wheel and repositioned USB charger. 

Plus, the BN Series II Mazda 3 scores Mazda's G-force Vectoring Control system, which uses the engine to enhance chassis performance by adjusting torque delivery in response to steering inputs, for more stable and relaxed driving. If your SP25's an auto, it scores a Sport mode that adapts the change-up points according to the operator’s style and inputs, its steering and ride qualities are better and the handling is smoother.

It sounds like you don't really need a big, heavy and expensive 4WD for the type of vehicle you require. Maybe ample ground clearance would be an advantage, but otherwise, as all the driving is on sealed or some dirt roads, a good front-drive (2WD) medium-sized SUV should suffice. This type of vehicle is typically more stable at speed as there isn't a high centre of gravity to contend with - a big safety plus. And while all-wheel-drive might be useful driving out of ruts, on sand or in snow, if none of the these apply, the 2WD's stability and traction control system ought to be enough. 

As a result, we recommend the latest-model (from May 2019-onwards) Toyota RAV4 GX or GXL. It is an exceptionally practical, roomy and robust SUV, with a high level of standard safety features, and big comfy seating. Its 2.0-litre engine is strong, smooth and economical. And you won't have a problem finding somewhere for it to be serviced.

If AWD is deemed essential, then the base Subaru Forester 2.5i is another great choice. Lots of ground clearance, a gutsy 2.5L engine and a soft, relaxing ride. Nowadays Subaru has increased its service intervals from six to 12 months, taking away one of the hassles of running these well-engineered Japanese SUVs.

Finally, the Mazda CX-5 AWD is recommended as well, for it too has a well-sorted AWD system. This is quite a sporty number, with plenty of higher-speed power for effortless overtaking, as well as responsive handling. 

All three SUVs mentioned retail at well under $40,000, and all are enjoyable, capable and reliable choices.

This model Mazda BT-50 and its Ford Ranger counterpart (they’re the same vehicle under the skin) have had their share of automatic transmission problems over the years. There are known problems with the gears in the oil pump which are prone to wear, valve-body problems and a fault with the output shaft speed sensor which can also fail, forcing the gearbox back into first gear at relatively high speeds. All these problems could be contributing factors in the problems you’re seeing.

While EGR valves often need replacement (and I’m not disputing that yours did) I don’t imagine the EGR valve would have had anything to do with your gearbox problem. It’s not uncommon – nor unreasonable - for workshops to charge a diagnosis fee (it involves workshop time, after all) but servicing the transmission alone won’t fix it if it has any of the problems I’ve listed above.

There are many things you should look out for before buying a second-hand workhorse like an XL 4x2 ute. Most never have an easy life.

Are there signs of abuse and/or neglect? How was the tray/load bed used, was it a tow vehicle and what does the type of wear and tear does it have?  Was the vehicle off the road at any time, and why? This may indicate a major accident.

Finding answers requires a level of trust and taking the vendor's word at face value, but you can back these up with service records and history. Are they complete, and carried out by a Ford dealer or specific Ford specialist? If the answer to either is no, then that should be a red flag. In our opinion, these vehicles require specialised Ford maintenance.

Furthermore, having 15,000km service intervals is a bit of a stretch for such hard-working vehicles, so skipped ones is especially worrying.

We also recommend taking the Ranger to an independent mechanic for inspection, especially to check the body and suspension underneath for signs of over-loading or off-roading. 

Since the PX generation was launched in 2011 Ford has issued many recalls for the Ranger, and some are serious, including for being a fire hazard over tall grass due to exposed exhaust. The car's service history will indicate whether all recalls have been carried. You can crosscheck them at this website: https://www.productsafety.gov.au/recalls 

Rangers are known to have issues with the automatic transmission, engine control module (ECM) failures (that send the truck into 'limp home mode' in hotter climates or after long-distance driving), air-conditioning, turbos and engine crank bearing. Most of these should be picked up by an experienced mechanical check-up before buying, or sorted out under warranty if you decide on a newer model.

This sort of advice applies to all used trucks. Fundamentally, the T6 Ranger is a solid, safe, durable, comfortable and enjoyable truck to own and drive, and remains the only one (along with the T6-based Mazda BT-50 from 2012 to mid-2020) that is designed, developed and engineered for Australian conditions, so don't be put off.

Just make sure it has history, ask pointed questions about how it's been used and don't be afraid to insist on a mechanic's report.

We hope this helps. Good luck.

For a few years from 2005, Nissan sold two types of Navaras in Australia - the all-new big D40 series and the old D22 that dated back from the latter 1990s. 

If you want an inexpensive, compact and hard-wearing truck that's reliable but not very refined nor comfortable, the old D22 is it. Its 3.0L turbo-diesel has proven strong and reliable in this application and the Nissan has a reputation for being as tough as nails.

The larger and newer D40, meanwhile, is the much better choice if space, safety and refinement are priorities, and remained a class-leading proposition right up until the current-generation Ford Ranger, Mazda BT-50 and Volkswagen Amarok all moved the pick-up truck game on in 2011. The Spanish-built ST-X is the choice grade, especially in turbo-diesel and 4x4 guise.

The Navara is considered a reliable and dependable truck, but many are also workhorses that lead tough lives and are often neglected or mistreated. If you're after one, please consider having it checked out first by an experienced mechanic.

Known issues include fuel-injection failure, roof rust, premature clutch wear in manual  models, electronics issues, turbo-charger failures and sagging rear springs.

Such problems can apply to any similar truck, so don't be too put off by the D40 Navara. It's a firm used-truck favourite for good reason.

You don't need to spend $30,000 to get a great small car to run around town in. A Suzuki Swift GL Navigator from $17,690 plus on-road costs ($1000 more for the auto) makes for an excellent choice, with a surprisingly roomy interior, a refined, frugal and lively engine, great handling and superb reliability. Great value for money, in other words.

Moving on from there, to the next size up and in our order of preference, are the Mazda 3, Ford Focus Active, Volkswagen Golf, Toyota Corolla Hatch, Honda Civic (turbo only) and Subaru Impreza. All are quality small cars that should fit the bill perfectly.

There's also merit in considering a small SUV, chiefly because their higher roofline and loftier seating positions make them easier to get in and out as well as see out of. Our value pick is the Kia Seltos S with Safety Pack. The Mazda CX-30 and Toyota C-HR are also high-quality and refined choices, though they're right at the cusp of your budget so you may have to search for a discounted demo model. Going small SUV does  mean extra outlay, but they do generally offer better resale value, as their popularity seems endless.

As you can see, there's lots of choice, so take your time, drive the ones you like the look of, and see which feels best. Out of scores of alternatives, these 10 are our top recommendations at under $30K.

ZS pros include cheap pricing, an easy driving experience and a comparatively spacious interior compared to other direct rivals like a Mazda CX-3. The dash is pleasant, there is a decent amount of equipment and the controls are all simple to use. It should also be fairly inexpensive to run and service, though earlier ZSs like yours require six-monthly rather than 12-monthly service intervals.

There are two engine options - a 1.5-litre four-cylinder model with a four-speed auto on the base Excite, or a 1.0-litre turbo three-cylinder version on higher-specification Excite Plus and Essence grades with a six-speed auto. Note that the latter powertrain is more expensive to service.

Plus, there's still a fair chunk of the manufacturer's warranty left, which is seven years, while capped-price servicing is also offered.

But the ZS does not offer AEB Autonomous Emergency Braking, so only rates a four-star ANCAP crash-test rating.

Additionally, the ZS's suspension is on the firm side in terms of dealing with road bumps, which might upset some occupants, yet there is not much of the 'fun factor' in regards to steering and handling finesse that rivals like the CX-3, Suzuki Vitara, Honda HR-V, Hyundai Venue, Holden Trax, Ford EcoSport and Hyundai Kona offer in spades.

We've also heard complaints about the interior's perceived quality being sub-par, cabin storage isn't generous and Android Auto isn't supported (though Apple CarPlay is).

Finally, the ZS' resale value trails all of the aforementioned competitors by a significant margin, meaning it's on track to be worth less when the time comes to on-sell it.