Depends on what exactly you want to improve on Audi A4 Avant. Performance or comfort?

Do you already have a preference? That could influence the choice.

Nextbase 622GW Dash Cam is definitely the best choice for Audi A4 Avant. The design is modern and sleek The build quality feels premium and should last for years.

Why this product? The quality convinces in all tests - both for performance and for durability. Unbeatable for the price, can only recommend. Have already used it for several months, always satisfied. Also more than sufficient for demanding driving conditions.

Re: "Do you already have a preference? That could..." - uzdimexhxt is right to ask, because over the years I've seen people rush into buying cheap 12V vacuums that can actually mess with the Audi electrical system. In my experience, you want something self-contained that wont risk a blown fuse or drain your battery during a deep clean. I've found that the Dyson V7 Trigger Handheld Vacuum is the most reliable option for the A4 Avant interior for a few reasons:

• It lacks a cord, so you arent dragging a dirty wire across your leather sills.
• The suction is consistent, unlike plug-in units that lose power as the motor gets hot.
• The specialized crevice tool actually fits into the tight gaps around the Avant cargo tracks. Just be careful with the brushes on the piano black trim tho. I usually stick to the soft dusting attachment to avoid those hairline scratches that show up so easily on Audi plastics. Safety and reliability should come first when you're dealing with a premium interior...

Using BlackVue DR900X Plus for about a year for Audi A4 Avant and can only recommend it. The sound quality is excellent The high quality makes everything feel premium and reliable.

For Audi A4 Avant I would take Garmin Dash Cam Mini 2 without hesitation. The reliability is very good The quality out of the box is very good.

Long-term experience: Using Garmin Dash Cam Mini 2 for more than a year and am thrilled. Have researched for a long time and this product was the best choice. The quality clearly exceeds my expectations. Very good price-performance ratio, can only recommend further.