One problem related to noises during shifting has been reported for the 1999 Hyundai Elantra. The most recently reported issues are listed below.
At 2,235 miles I was experiencing a harsh 2 to 3 upshift and alot of chugging noise. A whole new transmission was installed. The at 5. 630 miles I had a leak in the brake master cylinder. Both items are being repaired under warranty but it is very inconvenient and frustrating to have a new car have these "serious" problems.