We purchased this GC about 3 months ago. We decided on a diesel for fuel economy because we want to do some traveling once we're able to retire. For now though, we're still working. Shortly after buying the vehicle a warning was displayed to get maintenance immediately. It was discovered the DPF was just about full. We had no knowledge about this filter and what's required! We live in a large city. My husband drives this car primarily and drives to and from work (not on an interstate highway) and then to and from golf on the weekends (on interstate highway about 20 min each way)... approx. a total of 75 miles a week. So we had the filter cleaned and were told we needed to get the vehicle to highway speeds of 55 or higher when the 80% maintenance display came on and drive it for up to 20 min. This is a nightmare for us! Anyway, sometime after this we drove to the airport (45 min drive on interstate highway) and thought... "ok, good the filter is getting cleaned out", but one week later the 80% display came on and thankfully my husband was close to the interstate. He was on his way to work when this happened and by the time he got to work he was an hour late (due to traffic he'd never have encountered otherwise). We're taking a trip to an area where driving 55 MPH and up isn't possible... small roads. What would we do if the 80% display comes up?! We did our homework prior to purchasing and didnt see anything about the DPF and it's requirements.