The Korean carmaker arrived here in the 1980s as a cheap-and-cheerful brand for the cash-strapped, but it is now represented by the factory and has a much broader appeal with a comprehensive range of well built, competent and affordable models including small, mid-sized and medium sedans and hatches, sporty coupes, SUVs, people-movers, and light commercials. Small cars are the i20, Accent, Elantra and i30 hatches, medium models comprise Sonata hatch, and i40 sedan and wagon, there's also the sporty Veloster coupe, and the luxury Genesis sedan. The peoplemovers are the compact ix35 and the medium Santa Fe, and there's also a range of vans and light-duty trucks.
There are many reasons this could happen, and they could be mechanical or electrical. An engine that revs freely with no load on it, but goes weak at the knees when a load is placed on it, could be suffering from poor fuel supply, a faulty ignition system, internal wear, a blocked exhaust or even a worn driveline that is creating excess friction. You could even have a seized brake or something equally fundamental going on.
But it’s also true that the car’s computer can send the engine into what’s called limp-home mode if it detects a serious problem. Limp-home mode limits the amount of power the engine can make or how fast it can rev, as a means of protecting it against further, more serious damage. Perhaps that’s what’s going on here. Certainly the symptoms match that diagnosis. The best advice is to have the car electronically scanned to see what fault codes are thrown up by the computer. Only then do you have a decent starting point on where to look for the root problem.
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What you haven’t told me is whether your car has an automatic or manual transmission. And that means different things if the transmission has somehow been over-filled.
In the case of a manual gearbox, you’ll find that the extra oil will probably soon be evenly distributed across the bottom of your car as the excess exits the scene through either a breather tube or a seal or gasket.
But if it’s an automatic, the extra fluid could cause the entire transmission to behave strangely, as this type of gearbox relies on the correct internal fluid pressure to select gears, change gears and, in fact, make the car move at all. Again, though, the extra will probably force its way out through a seal or gasket and then you have a much more complicated repair to make.
The best advice is to check the level of the fluid as set out in the owner’s handbook and make sure the level is correct before driving anywhere else.
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This is not an unknown problem with some Hyundai engines, although, to be fair, most of the oil burning problems were in earlier models than yours. That doesn’t mean you don’t have the same problem, though, and it’s definitely worth checking out and finding a solution.
The first thing to do is to contact Hyundai Australia’s customer service department, and let them know you have a problem. My experience has been that Hyundai takes customer satisfaction very seriously.
The next step is to determine exactly how much oil is being consumed. The dealership will be able to help here and will probably fill the engine with oil, seal the dipstick and send you away to cover 1000km or maybe more. Then, the oil level is checked again and you’ll know precisely how much has been consumed over a known distance. Based on that information, you may be able to negotiate a deal with Hyundai that sorts the problem without you paying for the entire bill (if, for instance, it’s determined that a new engine is required).
Obviously, there are lots of factors at play here, including how many kilometres the car has covered and its service history. But it’s definitely worth getting to the bottom of the problem sooner rather than later.
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