We bought a used Jetta for our teens to drive when they got their licenses. Bought it in 2002 and it was probably three or four years old. That thing gulped a quart of oil with every gasoline fill-up! I hammered the kids to add oil at every stop at a gas station. Surprisingly, it never fouled the plugs. That was the one and only Jetta we ever owned.
Our experiences with two Volvo 740s were just as bad (not oil, though) and a horrible experience the past six months with a Ford Escape.
“Bought it in 2002 and it was probably three or four years old. That thing gulped a quart of oil with every gasoline fill-up! “
My ‘05 TDI Jettas make it 10000 mi [factory oil change period] with maybe a quart of oil usage. [And they are both close to 170,000 mi., to date.]
The previous owner probably never got the oil changed.
One of the possible results of a failure to change the oil is increased oil consumption.
Buy a Honda or Toyota and most of those kind of headaches will disappear.