Nearing the end of my lease on an '03 TL-S. Got it because dealer was marking down vehicles to make way for new '04s. Didn't research the vehicle beforehand as much as I usually do. So far, dealer has replaced the decal stripping around all exterior windows, the driver's side window controls replaced, clock light is out, seats squeak when driving over bumps, 6-disc CD has been on the fritz for months. I have been to the dealership 3x for the CD player, and they have had to re-order the unit because replacement doesn't work, or they've used it to repair the stereos in other cars. The tranny is now frozen in Park, will take it in on Monday. Do not buy '03 or prior year TL.
Engine is very nice, ride is great, stereo sound not bad. Fun to blast around SoCal freeways, when they are open. Very roomy, Acura badge has decent brand recognition without being hugely expensive like German brands.
All items in above review need to be improved. Anticipate a difficult time ending lease with dealer, given all of these problems. I've heard the '04s are much better. Even though reliability is major issue, still not as bad as Audi or VW.