The car makes a lot of noise when driving, not sure why.

The engine is a 4-speed, and the upshifting process is long, similar to revving up in a manual transmission before shifting gears. The noise is a bit loud, and because it's a 4-speed, the engine is quite durable.

Hey folks, my 07 3.5 Alphard suddenly lost the reverse camera image. What's going on? Thanks.

Poor sound insulation.

It's not the sound of the air conditioner; it should be the engine and wind noise.

Is it the sound of the air conditioner?

Clean the fuel line, replace the shock absorbers and control arms. It's normal for an older car.

It's just really big, no particular reason. The sound insulation is also average.