
Audi A6's wading depth is generally half the height of the tires. The Audi A6 has a rim diameter of 17 inches. When the water depth is one-third of the tire height, you can safely pass through without causing unnecessary damage. Below is an introduction to car wading-related information: Effects: Wading may cause the car's engine to ingest water and stall, and may also damage the vehicle's electronic systems. Damage: If the electronic systems are damaged, it will affect the normal operation of the car. Wading can also affect the car's chassis, leading to rust. If water is ingested by the engine during wading, the engine will stall. If the electronic systems are damaged, they must be replaced immediately; otherwise, it will affect the normal operation of the car.

That day driving an A6 through floodwaters in a heavy rainstorm, I suddenly realized the air intake is at half the height of the tires. The official guideline says water depth shouldn’t exceed the center of the wheel hub. In reality, it can still move when half the wheel is submerged (about 25 cm), but the radar at the bottom of the front bumper might get flooded and stop working. A friend of mine once drove through water that submerged the license plate, and the AC reported a malfunction. The mechanic said a soaked air filter with moisture can be even worse for the engine. The safe approach is: if the water level is above the lower edge of the door sill, take a detour. If the car stalls in water, never restart it—repairs could cost as much as a few designer bags, especially for hybrid models where the battery is under the chassis, so extra caution is needed.

Having driven both the older C7 and the newer A6L, wading through water depends on the situation. For pure fuel versions, the air intake is about 30 cm from the ground, and the official conservative suggestion is not to exceed 20 cm of water depth. Electric models with the MQB platform have batteries under the car, giving them better wading capability, but repairs can be terrifying. Personal experience in the rain: observe the height of the water waves pushed by the car in front—if it continuously submerges the front lip, don't take the risk. The key is to keep the water temperature below 90 degrees; turbocharged exhaust temperatures can reach 600 degrees, and sudden exposure to cold water can really cause cylinder deformation.

Having repaired Audi vehicles for eight years, I've seen too many A6 malfunctions after water wading. The key is the intake position, approximately inside the right front wheel arch. As long as the water level doesn't reach here, the engine is generally safe. But electrical faults are more troublesome: repairing a soaked millimeter-wave radar starts at 30,000 RMB, water entering the transmission vent hole can emulsify engine oil, and the most frustrating is water corrosion in wiring harness connectors - the fault codes can light up like a Christmas tree. I advise owners encountering flooded sections to reference the curb height; exceeding 15cm is unsafe.

Actual test data speaks: Measured the unladen ground clearance of the current A6L at the dealership—front bumper is 18 cm off the ground, and the engine air intake sits at 32 cm. Theoretically, as long as water doesn’t submerge the air intake, it’s fine, but dynamic driving can push up waves! Someone forced their way through 40 cm deep standing water, resulting in fogged headlights and water ingress into the air suspension airbags. Not to mention, the entire lineup now comes with electronic control systems—if the ECU gets soaked, it’s game over. Insurance payout criteria state that if the water level exceeds the sill trim (about 28 cm), they won’t cover engine damage. This is not an area to cut corners on.


