Diesel particle filters add a new dimension to owning a diesel. Not a great one unfortunately. You have to expect issues with them will arise.

We only purchased a car with one as the wife will use the car on 90 percent or more highway driving. I hope this aids self cleaning and slower ash buildup.

When these engines start to consume base engine oil the car has to go or the particle filter has to be eliminated I expect.

Or if used like I use my own car I would not own a car with one. The warranty on the wifes car has been well engineered. Just before the DPF check is due the warranty stops.


So I will take the car in for a percentage ash retention test just before that millage. While still under warranty. Most Volkswagons will need a replacement at 120,000 miles. If they do not giving it a recheck is needed every twenty thousand miles after the first.