Credov's researched list of the 6 faults the Hyundai Hyundai Tucson is known for (2015–2021), 6 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: Listen warm and cold for a metallic knock that rises with revs, worse under load.
Why it matters: Rod bearing failure here can seize the engine at speed, which is a loss-of-drive safety risk, and a factory engine replacement with no paperwork should not be assumed to be fixed for good.
What to look for: Pull away gently and briskly from a stop several times, including on a hill.
Why it matters: A gearbox that hesitates to take up drive when pulling out into traffic, or rolls back on a hill, is a real safety risk as well as an annoyance, and the fix may be more than a software update.
What to look for: Ask for a receipt or sticker showing the timing belt was changed within the last 90,000km.
Why it matters: A snapped timing belt on this interference engine bends the valves against the pistons, which on a car this age is usually an engine replacement rather than a repair, and it can happen without warning while driving.
What to look for: Ask for a receipt showing the V6's timing belt and water pump were changed within 90,000km.
Why it matters: A snapped belt on this interference V6 bends the valves, and a weeping water pump hidden behind the timing cover can quietly ruin a newly fitted belt, so both need checking together.
What to look for: Check the dipstick colour and level and listen on a cold start for a knock or tap.
Why it matters: This is a known engine-wear pattern on the model that can progress to seizure, and a rebuild or replacement block is a major cost on a car that may otherwise look well kept.
What to look for: Feel for judder or flare in slow traffic and on a hill, and watch for a transmission warning.
Why it matters: A clutch that is already juddering or overheating is close to needing a new clutch pack, or in worse cases a replacement gearbox, which is a significant unbudgeted repair.
Got a question about a Hyundai Hyundai Tucson? 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.