Credov's researched list of the 6 faults the Jeep Wrangler JK is known for (2007–2018), 4 of them serious or costly. Each one says what to look for when you check the car, so you can spot it before you buy. Not every car has these faults: they are the ones worth checking on this model.
What to look for: Over a rough patch at 80-100 km/h, feel for a violent steering-wheel shake that needs slowing to stop.
Why it matters: A death wobble episode is dangerous at highway speed, and the steering damper some owners fit only masks worn parts underneath rather than fixing them; repairs run from about NZ$500 to NZ$3,500 depending on how many parts need replacing.
What to look for: Test every light, indicator, wiper, lock and the horn, and start the car several times, for random faults.
Why it matters: A replacement TIPM fitted is around NZ$1,200-2,500, and a fault affecting the fuel pump relay can cause stalling or no-start that leaves the car stranded.
What to look for: Check the dipstick for a low level, and look for blue smoke on start-up or hard acceleration.
Why it matters: A spun bearing or thrown rod from running low on oil nearly always means a replacement engine, typically NZ$7,000-12,000, far more than the cost of catching the oil consumption early.
What to look for: With the bonnet up, listen at idle for a tick from the driver's side head, and feel for a rough idle.
Why it matters: The fix is a replacement left head, about NZ$4,000-8,000, or a full engine in a worse case, and the fault is one of the most frequently reported on this generation of Wrangler.
What to look for: Open the tailgate fully and check it stops firmly, with no bent hinges or cracked tail light.
Why it matters: A broken check arm has already damaged the tail light and trim on many cars, and the fix plus any body damage can run to several hundred dollars.
What to look for: Look at every door, bonnet and tailgate hinge for bubbling paint, orange rust or white powder.
Why it matters: It is mostly cosmetic but looks bad, spreads if left, and a respray of several hinges typically costs several hundred dollars.
Got a question about a Jeep Wrangler JK? Ask Credov: a noise, a warning light, a part or how to fix it.
On top of the faults above, every Credov inspection covers the basics: fuel smell, leaks or filler rust, engine oil leaks, power steering fluid leak, drive belt cracks or squeal, rust underneath: chassis and mounts, engine mounts, engine oil level and colour, coolant level, colour and leaks, head gasket failure signs, cold start: rattle, knock or smoke, rough or hunting idle, engine running hot on gauge, gearbox or diff oil leak, swapped gearbox without lvv and more.
Researched by Credov from manufacturer recalls and service bulletins, owner reports and workshop sources. Repair prices are typical ranges, not quotes. See also fault codes and repair costs.