Just had my A3 TDI for two weeks but, so far, it's an outstanding little vehicle. Peppy, quick steering, and great to shift in the manual mode. Build quality and economy are excellent, ride is a tad choppy but sure-footed, comfort is adequate, and interior and exterior are show- stoppers. My other car is a 540 BMW, so the downsize is taking a bit of adjustment -- don't know how I'll like the A3 on a long trip -- but so far, a big thumbs up. Anxious to take out to the interstate for a 500 mile shakedown.
Economy, build quality, interior and exterior styling, outstanding handling.
More power definitely couldn't hurt, but the little diesel seems to be more than up to the task.