I paid an extra 30 euros for an upgrade and the car was excellent and good value for money

You did very well!

Interrent charged an additional 191.39 euros, despite easyrentcars receipt saying I'd paid for the car and fully comprehensive insurance and no payment was due on arrival. This was like arriving at the airport for a flight I booked and being told it cost 200 euros extra!? I've then been charged a late charge of 40 euros and I'm still awaiting my 80 euros petrol deposit from May (now August) despite returning the car full and within the hour of the nominated return time. I called several times and was awaiting a response to the emails they had told me to write to. They then directed me to an online claim form, which I've just recieved a response to. They have informed me that the 191.39 is a compulsory charge, even though it was put in the 'Extras' column (therefore not allowing easyrentcar to claim the money back), and not included when or clearly noted when booking the car. It's been an expensive and frustrating experience.

Will never use again and will encourage others to do the same. Worst customer service I have ever experienced

Wasn’t located in the terminal unlike advertised. Inter rent did not accept my AMEX or my wife’s VISA for the deposit of €1400 and so we were forced to buy an excess waiver (despite having my own insurance) for €180 at the counter. Had we not had a 2 year old with us and had not been waiting over an hour to get the car we would have just left and gone with a more reputable company such as Avis. In the end we paid the money just to put an end to the ordeal

Very good value for money.