What is the solution for rear seat resonance in the A4L?
2 Answers
This is a design issue, and applying double-sided tape around the cover can significantly improve the situation. Here is some related information about the Audi A4L: 1. Advantages: Fashionable and dynamic exterior with smooth lines; exquisite interior craftsmanship and good configurations; excellent sound system; spacious and practical interior with good comfort; a classic brand. 2. Handling: Comfortable handling with a sporty style, wide field of vision, and good steering wheel feel; tires have good grip, solid chassis, and decent off-road performance; responsive brakes with low noise, but some users have reported occasional throttle lag and noticeable steering wheel vibration at high speeds.
My A4L also had the rear buzzing noise issue before, and it took me quite a while to figure out the cause. The main problem was with the exhaust pipe – the factory rubber hangers were too stiff, causing exhaust vibrations to transmit directly into the cabin. After switching to softer rubber hangers, it became much quieter. The trunk floor was another trouble spot, especially the large metal panel in the spare tire well which was prone to resonance. I removed the spare tire, lined the well with soundproofing foam, and put it back – the improvement was remarkable. The rear seat latches were also problematic; even slight looseness would cause buzzing. Wrapping them with felt tape before securing solved that issue. The whole fix cost me about 200-300 RMB, and now the rear is perfectly quiet – I don't even need to turn up the music to cover road noise on highways anymore.
