Car radios , when to upgrade and what is needed:
You should consider upgrading your car radio when it is missing a feature you need. For example, you need to add Bluetooth for calls and streaming, Navigation GPS, DVD player, aux in, CD player, Mp3 capabilities or you want to add more power to the existing radio.
Along with the radio, you will need a dash kit to make it fit into your car if it is not a standard din or double din size. Din size openings are 7 x 2 high and double din openings are 7 x 4 high. If you have these standard sizes, you can just buy any standard din or double din radio.
Some examples of DIN size radios below
Some examples of Double DIN size radios are below
A dash kit is usually needed to fit any radio into NON standard openings. These kits are specific to make, models and years. Be sure to pick the right one and check for compatibility. They come in all shape and sizes.
There are also less expensive dash kits which will cover a wide range of vehicles. (for example, a honda kit which will cover the majority of Hondas). Since these kits are so universal, it is also less money.
If you have steering wheel controls in your car, find a radio with steering wheel controls and then you will need a steering wheel interface to retain it also. This is optional