One problem related to o2 sensor has been reported for the 2001 Volkswagen Beetle. The most recently reported issues are listed below.
I own a 2001 Beetle. It has only 50,000 miles on it. The other day the check engine light came on. I just took it in to the dealer, and they told me they have to replace a coil and an O2 sensor. All this is going to cost me close to $1000! after doing some research online, I found that this is a very common complaint for vw Beetles. Vw needs to issue a recall since this is a problem for so many people. I read of people having the car stop running while they were driving. This could cause accidents.