Jet2.com Limited Reviews 

AVOID
Do not use Jet2carhire to book a hire car because they do not provide any support or customer service. Once they have collected your money they cease interest. When any issue arises they wash their hands of all responsibility.
After returning from holiday and 4 months had passed I noticed an unauthorised amount charged to my credit card. When I asked Jet2carhire to investigate and advise what this additional charge was for they declined all responsibility saying that they merely acted as a conduit to a broker who then offered various cars, and my contract is directly with a distant car hire company. I used Jet2 because after booking my flights with them several times and never experiencing any problems I trusted the name.
On Jet2carhire website it states that they have the following statement:-

“Highly recommended by our customers
We are rated 7.4 out of 10 on TRUSTPILOT based on 92,028 reviews.”

However on looking at Trustpilot website it was 87% bad & 13% Poor.

We booked a car via Jet2 who put you onto RentalCars who arranged a car via Orlando! (Hire took place in Puerto Rico, Gran Canaria, in September 2019). We hardly used the car and returned it in exactly the same condition. When we returned home, Orlando took over £250 from our credit card (with associated card charges) with no explanation. We complained to RentalCars and eventually were sent a photo of a slight mark on one wing. We countered this with a photo of the same mark that we took when we collected the car! We believe this to be an example of fraudulent practice. The photo we took was dated and timed. RentalCars have not helped at all and would not put through to a manager nor give the manager's name. Jet2 have been unsympathetic and dreadful to contact! Their Customer Care is non existent and has no telephone number and does not call back. We will never again hire a car from this organisation and are unlikely to book another holiday with them! Be very aware and do not hire from them! We have reported this matter to Trading Standards and are considering legal action.

Booked car hire for Tenerife thru Jet2 car hire. Good rate for a car from Thrifty - a well known international car hire Co.
Then I received an email from some company called CarRental.com whom for some reason were now the people I had to deal thru!
I looked them up and found mostly very bad reviews!
I cancelled & hired with Auto Reisen, a local hire Co I have used many times.
I feel Jet2 should inform clients from the word go that they will actually be dealing with THREE companies!

Hired car via jet2 at split airport with Carwiz. Total ripoff. Collecting car and returning car numerous clients having to pay for dubious marks, scratches. All very upset. Do not use this car hire company, cancel any bookings if you can.

AVOID!!! I used them because Jet2 holidays seemed OK. A 350 Euro excess at Faro airport and then Budget stitched us up with a rogue car hidden in the corner as we refused to take the daylight robbery excess! I complained to Jet2 inc the car hire dept and nobody gave a monkeys and told me I should have read the terms and conditions!!! Jet2 has no real customer services and tell you to email and wait 21 - 28 days for a reply. When they do reply they've all done the same course advising customers they should have read the terms and conditions!!! They also lied, stating that the reason was I didn't have enough credit on my card - that's total fabrication!!! The form actually says CDW included. Spoiled holiday by a company that didn't give a ..... AVOID!!!

do not use jet2 car hire they use the cheapest car hire (goldcar in spain) and you'll have nothing but problems when you get back home, when we picked up the car it had loads of scratches on it that had not been marked on the paperwork, so we took pictures and went back to tell them, they supposedly marked them down and told us it was ok , now back home the company is asking us for £200 for a scratch that we had done to the car. we have told them that we have pictures of the said scratch and still we wait for a response. i'll never ever use jet2 again and im going to post all over social media so nobody gets ripped off like we have

DO NOT DEAL WITH JET2CARHIRE
They are third party for firefly car hire ( look at trust pilot reviews)
I've had £113 taken in unauthorized debit from my credit card and Jet2 just keep going round in circles, there isn't a contact number or email for the car hire!
Keep well away is my advice
Use avis and Ryan air in future

I have just called Jet2 car hire on 0800 655 6182, 11.08.19 at about 15:50. I'm utterly disgusted with the individual I spoke with. I called to ask for advice. My Father is in intensive care following a heart attack and subsequent triple heart bypass and is no longer able to go on holiday. I was mid way through explaining the situation when the agent cut me off and said I'm not able to discuss the booking with you due to GDPR regulations. I'm fully aware of GDPR regulations working in a financial institution myself. All I was asking for was general process advice even if that was we need to wait until my Father is in a position to speak. I requested that perhaps he had some compassion and waited for me to finish explaining about by Dad instead of cutting me off. Had he of let me finish and then politely said something along the lines of 'sorry to hear about your fathers situation, whilst I'm not able to directly help you with his booking if you have his booking information you might be able to login and manage his booking, if you haven't then it will need to wait' But no he did not handle the call in that way at all. What if I had been going on to say my Father had died, he didn't know at the point I had got to as he just cut me off dead and spoke over me. Needless to say we will never be booking with Jet2 car hire or using any of Jet2 services again. A totally appalling customer journey.

Please do not use jet 2 car hire when travelling to Alicante in Spain.
It is another case of British holidaymakers being RIPPED OFF by SPAIN.
You pay for car hire online then they say you need full insurance so you have to pay more money.
Then when you get to Alicante they use a company called wiber who charge you for the insurance again as you need their own insurance.
PLEASE DO NOT ALLOW THiS TO HAPPEN TO YOO it will be a nightmare start to you holiday