This might sound obvious, but your car charger needs to be as close to where you normally park your car as possible.
The charger cannot face the highway or be within two metres of it. You'll need an electricity supply to whichever location you choose, with a dedicated connection on your home's consumer unit to provide enough power.
If the installed requires the consumer unit upgrading to accommodate the charging unit, you must contact the council for further advice.
Always check the length of cable that comes with the charger you're considering buying and make sure it will reach the charging point on your car.
You don't want to be pulling the cable taught or parking your car at an angle to get it to plug in.
Finally, consider where the cable will be while the car is charging. Try to avoid having it trailing across an area where you walk regularly as it will be a trip hazard, particularly at night.