Engines can be sneaky. On the surface, everything sounds fine. No weird noises, no smoke, no warning lights. But under the bonnet? That’s where problems love to hide. If you’re checking out a used car, it’s easy to miss early signs unless you know exactly what to look for. Experienced inspectors pick up on these things quickly – but if you’re going in solo, here are a few big ones to watch.
1. Oil Leaks in a Used Car
A small oil leak might not look like a big deal, but it can turn ugly fast. Check under the car after it’s been parked for a bit. Fresh oil spots or a greasy engine block are red flags. Also, pop the bonnet – if it smells burnt or looks messy, something’s off.
The cost to fix
Minor leaks might set you back around $200–$600, but major gasket issues can climb past $1,500 in Australia. Not cheap, mate.
2. Cooling System Problems in a Second Hand Car
Overheating is one of the quickest ways to ruin an engine. When looking at a second hand car, keep an eye on the temperature gauge during a test drive. If it creeps up or fluctuates, that’s a warning sign. Also check the coolant – low levels or rusty colour usually mean trouble.
The cost to fix
Repairs vary. A simple hose replacement might cost $150, but a radiator or water pump job can hit $800–$2,000.
3. Misfiring or Rough Idling in a Used Car for Sale
Ever noticed a car shaking slightly while idling? That’s often a misfire. It could be worn spark plugs, ignition coil issues, or something deeper. When checking a used car for sale, start the engine and let it idle. If it feels rough or inconsistent, don’t ignore it.
The cost to fix
Basic fixes like spark plugs can cost around $150–$300. But if it’s fuel injectors or internal engine problems, you could be looking at $1,000 or more.
Also Read – 5 Tips to Ensure Good Engine Health in Used Cars
Book Your Used Car Inspections With Us
Engines don’t always tell the full story upfront. That’s why proper Used Car Inspections matter. A trained eye can spot these issues before they become your problem. If you’re serious about buying, get it checked by professionals who know what they’re doing, like Greasemonkey Inspectors. It’ll save you stress, time, and a fair bit of cash down the track. Book an inspection and buy with confidence.










