Avoid at all costs! I booked a hire car with Green Motion and the company claimed I caused a scratch on the front bumper. I categorically did not cause this damage in any way and told them so, but the Green Motion member of staff escorted me to the front desk and made me feel like I had no choice but to be charged almost £500, as the company had my deposit and were claiming I caused the damage. I suspected this was a scam payment but I allowed them to take this payment under protest. I was really unhappy but felt like I was being coerced into agreeing so that I could leave. I actually had already booked my own excess insurance as I usually do when hiring cars, so thought I could sort this through them. However when I phoned the insurance company hey informed me that they specifically do not cover Green Motion due to 'the high number of fraudulent charges this company makes for damage not caused by the driver'. I've done some research and it looks like Green Motion regularly try to scam their customers, as laid out in this BBC article.  https://www.bbc.co.uk/news/uk-england-london-46974240 Avoid, and don't forget that your own excess insurance may not cover Green Motion - loads of them don't.