Audi A4 B8 with DSG gearboxes can exhibit clunks, jerks or harsh engagement events. DSG systems are performance-focused but sensitive to maintenance.

Symptoms

• Jerky shifts or clunk at launch
• Shudder during gear changes
• Transmission warning light or limp mode

Main causes

• Mechatronic unit faults
• Worn clutch packs
• Old/low transmission fluid
• Software calibration issues

Solutions

• Change DSG oil/filter (~60,000 km)
• Replace clutch packs or mechatronic unit
• Reflash/update TCU software
• Maintain fluid service intervals

Advice

Ignoring fluid service greatly increases risk of mechatronic or clutch failure.