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(#5) GMs With 3300, 3400, And 3900 V6 Engines
From Redditor /u/anail1994:
Actual mechanic here.
Buy nothing from General Motors with the 3300, 3400, or 3900 V6 engines in them. They are unreliable trash and come from the "high value" platform. That means cheap, and not for you - cheap for General Motors.
Poorly made parts all the way through and really awful engineering. The 3800 V6, on the other hand, is an amazing motor with only a few minor problems.
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(#21) Mini Coopers (2006-2011)
From Redditor /u/Phantom_Scarecrow:
Hobby mechanic.
Mini [Cooper], 2006-2011, with the N14 "Prince" engine. The issue is solving itself (by aging out), but the timing chain tensioners fail early, causing a loud rattle that leads to skipped timing and major engine damage. They can fail as low as 20,000 miles, and often go around 50,000.
Older cars had the Tritec engine; newer ones have a different tensioner. The ones in that age range should have been fixed by now, but you never know.
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(#7) Mazda RX-8s
From Redditor /u/ldg25:
Son of a Mazda mechanic. If you live in the North, or anywhere it gets remotely cold, do not buy an RX-8.
It won't work three to four months out of the year, and will need constant, expensive care in the other months.
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(#10) Out-Of-Warranty BMWs
From Redditor /u/innerearinfarction:
My mechanic tells me never to touch an out-of-warranty BMW.
He owns two, and says the electronic gremlins have driven him insane, and are virtually unfixable by a non-dealer mechanic. They require circuit board replacements, proprietary software readers, etc.
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(#11) Brands Aren't As Important As Transmission/Engine Combinations
From Redditor /u/Sicknessindustries:
American automotive engineer here, mechanic before that.
Brands and models mean nothing. You need to go after or avoid specific engine or transmission combos. A same make and model year of a vehicle could have a 4-cylinder engine with great reliability, but a horrible 6-cylinder.
An example of this would be any 3.0L V6 in Toyota Trucks and SUVs from 1988-1995. They are gutless, inefficient, and eat head-gaskets, whereas the 4-cylinders from that era are bulletproof.
There are some really bad ones. Any full -ize Ford Superduty 6.0L Diesel has only four headbolts per cylinder like a gasoline engine, [so] the head gaskets blow anytime something small fails. GM full-size diesels use the Japanese engineered 6.6L Isuzu Duramax, which still commands high value.
Google is your friend. Find the engine and transmission model numbers and do your research before buying.
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(#14) Audis
From Redditor /u/zombiebub:
I work at a shop that specializes in European cars, with an emphasis on German vehicles. You could not pay me enough money to drive an Audi.
The amount of catastrophic failure I have seen on cars with less than 100,000 kilometers on them is insanity. Especially the 2.0L Turbos.
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About This Tool
More and more people are considering buying cars. In many places, cars are no longer just luxury goods, but necessities. However, many people have also raised doubts: you can always see the list of the best car brands, why is there no list of the worst car brands? Now this random tool has generated a list of car brands that you should never, ever drive.
This random tool generates 23 items, including some car brands which you should never buy, suggestions are from mechanics, such as PT Cruisers, Renaults, etc. If you want to know which car brands are, you could click each item, then avoid using these brands of cars.
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