2018 A4 S-Tronic Hesitation and Rough Shifts

ClearTheCode guidance (Audi · Buying & ownership)

Summary: For 2018 A4 S-Tronic Hesitation and Rough Shifts, work through these steps on your 2016+ vehicle:

1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
5. Test the common fix — follow model-specific service procedures; one change at a time.
6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: My 2018 Audi A4 Premium Plus, with about 60k miles, has started acting strange. When accelerating from a stop, there's a noticeable hesitation, almost like a delay before it engages.

Sometimes, the shifts feel a bit rough, especially in lower gears. It's not constant, but it's happening more frequently now. I'm worried about the transmission. Has anyone else experienced this with their S-Tronic?

This is educational guidance, not a substitute for hands-on diagnosis.