Here are the highlights...
Quote above from http://www.oag.state.md.us/consumer/lemon.htm
Maryland's Lemon Law applies to new or leased motor vehicles (including cars, light trucks and motorcycles), registered in Maryland, that are less than 24 months old and have been driven less than 18,000 miles. The law provides for consumers whose cars meet certain criteria to receive a refund or a replacement vehicle if repair attempts have failed to correct a problem, and the problem substantially impairs the use and market value of the vehicle.
The law provides that a dealer or manufacturer must correct a defect within 30 days after the consumer writes to the manufacturer by certified mail. If the manufacturer or dealer is unable to do so, the consumer is entitled to a refund or replacement vehicle under the Lemon Law if the car has:
A brake or steering failure that was not corrected after the first repair attempt, and that causes the vehicle to fail Maryland's safety inspection; or
Any one problem that substantially impairs the use and market value of the vehicle that was not corrected in four repair attempts; or
Any number of problems that substantially impair the use and market value of the vehicle that have caused it to be out of service for a cumulative total of 30 or more days.
If you suspect your car is a lemon -- for example, if the dealer has tried once or twice unsuccessfully to repair the problem and you believe the problem substantially impairs the use and market value of the vehicle -- you should write to the manufacturer immediately. You do not need to wait until the dealer has made the four repair attempts, or until the car has been out of service for 30 days.
It is the mileage that is going to give you an issue, but there is no reason you can't sell/trade in if you really want to. Personally, I would purchase an extended warranty, and if you're still not comfortable with the car by 100k then sell it. At least you will reduce your losses per year by extending your period of ownership.