No, the device doesn't have a navigation system; the devices with navigation systems are in a completely different league in terms of price - unfortunately. I can't say at the moment whether it fits a Golf. I installed mine in a Honda Jazz and had to replace the entire upper centre console with another one with a matching ISO slot; it wasn't too much of a hassle, not even financially. What is expensive, however, is the matching CAN adapter so that you can still operate the unit with the control buttons on the steering wheel. It cost almost the same as the radio itself. There are many videos on the net on how to replace factory radios with ISO-compliant car radios.

The compatibility of the Pioneer DMH-A240DAB car radio with a 2007 Audi A3 depends on a number of factors, including mounting space and electrical connections. - Mounting space: The radio is a 2-DIN model, which means that it requires a standard 2 DIN mounting space. You should check whether your 2007 Audi A3 has a compatible mounting space. - Electrical connections: You will probably need a specific wiring adaptor to connect the car radio to your car's electrical systems. An Audi A3 adapter kit may be required. It is recommended to consult a professional or check the specifications of the car radio and your car for a correct and trouble-free installation.

In order to use the steering wheel remote control, a CAN adapter suitable for Pioneer devices must be purchased.

Yes exactly

The A240DAB is one of a number of car stereos that Pioneer has rushed out in the wake of the 2020-2021 supply problems. The problem you explain has occurred on most A240 and A340s I have sold or installed. If you call Pionner they will tell you they don't know what the problem is or that your vehicle is the problem. Don't waste any more time or energy: get used to the problem or get a Kenwood or JVC, or a "real" Pioneer (250DAB, Z3200...)

Unfortunately, we cannot process such a request. You have to check this directly with your garage :(

This should be compatible: Pioneer DAB Disc Antenna

According to the supplier: No, a special mounting wing is required (but we don't sell this item, I'm sorry).

Possible with suitable interface via jack connection.

The scope of delivery for this product is as follows - Mounting bracket - Connection cable - External microphone