There are at least eight mass-produced engines in vehicles on the market today that have caused owners a lot of anguish.

Audi/VW 1.8T Four Cylinder Turbo

The 1.8 L turbo four cylinder from Volkswagen was found in almost everything the carmaker sold at one time, plus some models of Audi, including the A4 and TT coupe.

Unfortunately, the engine is a rolling disaster with sludge formation being a real threat.

Apparently, Audi/VW may not have informed owners that the engine required synthetic oil, so owners (and dealers) proceeded to use conventional oil after the break-in period. The usual coke/sludge issues appeared and engines failed in considerable numbers. Models from 1997 to 2004 are affected – essentially any car wearing the 1.8T badge.

Add to this high oil consumption and frequent coil pack failures – one coil pack sits atop each cylinder and serves as the ignition coil firing the spark plug – and you’ve got one troublesome motor.

Way to go, German engineering.

Toyota 3.0 L V6

Toyota’s 3.0 L V-6 is prone to clotting with oil sludge and seizing up in 1997-2002 models with this engine, although Toyota is apt to blame owners for not changing the oil often enough or for using the wrong oil.

Many experts disagree, suggesting a defect in the breathing or circulation system is the likely culprit.

The affected models include V6 models of the 1997-2002 Toyota Camry, Avalon, Sienna, Highlander and Solara. The Lexus ES300 and RX300 used the same ill-fated 3.0 L V6. After 2002, Toyota made some improvements that appeared to solve the problem.

Toyota settled a class-action lawsuit in 2007 that covered an estimated 2.5 million Toyota and Lexus models made between 1997 and 2002 susceptible to engine sludge. The automaker agreed to repair sludged engines for up to eight years after leaving the factory.

- See more at: http://www.wheels.ca/news/here-are-8-engines-you-should-avoid/#sthash.yvBqzIMK.dpuf

u 4 post everything here nw

https://www.nairaland.com/2879000/here-8-engines-avoid#42166195

Full article

Rubbish, Rubbish, Excellent Rubbish. I use a Toyota car with 3.0Litre V6 engine. 3 years and waxing stronger by the day. Immediately i saw this thread, i knew this guy will include Toyota 3.0 Litre V6. My car engine is well maintained with 5W30 engine oil.