It takes a while to get a new car up to a good baseline, so the work will taper off once you get caught up. I've had mine for about 350K miles (8+ years), so I've been through everything at least once. At this point, it goes to my indy once or twice per year for a "do whatever it takes" visit, maybe 10-30 hours worth of work to make everything correct. In addition, It probably gets another 10-20 hours per year to take care of maintenance and whatever little nits need fixing.