SIXT UK Reviews 

Polite service, but misleading upgrades and broken promises at Gatwick South (Agreement: 9613973687)

I booked and prepaid just over £1,100 online for an 8-seater from Sixt at London Gatwick South, expecting a comfortable passenger vehicle suitable for a week-long road trip up to Scotland and back.

When I arrived at the desk, I was assigned a standard commercial Mercedes Vito. The seats were rock-hard utility benches with bare-bones plastic trim throughout.
Spending seven days driving hundreds of miles up to Scotland and back in what felt like a builder’s van was simply not workable for my family’s comfort.

The representative who served me, K.B., was very polite, friendly, and appeared genuinely keen to help. However, looking back at the figures, the situation turned into an exhausting counter upsell:

* I was first charged roughly £350 to move to a slightly longer Vito, which did not resolve the issue with the basic seating.
*
* To finally secure an actual Mercedes V-Class with proper passenger comfort, another £350 was added on top.

Booking a V-Class directly on their website costs around £1,300. Instead of adjusting my booking to reflect that standard difference, I ended up paying nearly £700 in walk-up fees, pushing my total bill past £1,800.

To make matters worse, the vehicle was not even at Gatwick. K.B. took payment for an upgrade that was not on site. Knowing I had to drive to Southampton and could not wait around, he kindly assured me he would personally look into it, ring me directly, and arrange for the V-Class to be delivered to Croydon.

That call never came. Around 6:00 PM, another colleague phoned to say the vehicle was sitting at Heathrow—which was the only branch that actually had stock. By that point, I had already spent the entire day driving to Southampton and then across to Oxford. Completely exhausted, I had no choice but to wake up early the next morning and drive all the way from Oxford to Heathrow just to collect the car.

While K.B. was courteous throughout, being left with nearly £700 in extra charges for stock that was not at the branch, unfulfilled delivery promises, and hours of detours before a long road trip was deeply disappointing and stressful.

Booked a car 2 days upfront, got email confirmation, my card has been charged just to find out when I get to the desk that they do not have any available cars.

Now I am in the situation of desperately looking for a car that I need the following day at 6 in the morning. To make things worse, this took place sunday afternoon, when most places are closed.

All they could do for me is offer me a refund, which can take up to 2 weeks to receive.

How can you sell something you do not have? This should be illegal. There was a couple from australia who was in a similar situation.

Stay away from this company!

Surely the WORST car rental company in the UK for customer service and satisfaction, possibly the entire world. Spent HOURS trying to get customer service to provide a PIN to access the locker at Exeter Airport (on site shed closed) so that we could pick up our car having not received the PIN via email. Past from pillar to post countless times over multiple attempts to talk to a customer agent when the call was disconnected. No ownership. No genuine attempt to help us get on our way. AVOID this company at all cost.

This is my worst experience on car rental when SIXT partnership with Ryanair Car Rental. I have booked the service to pick up at Dublin Airport they refused to give me the car as they have the strictest 4 years rule on the liscense which all the other rental companies around the desk at the airport could offer the rental to me when I asked. Since I have a booking already with them through RyanAir Car Rental the staff said they could not help on any amendment and told me to contact Ryanair, I did and without any progress at that moment I had to find another rental agency on site to continue my trip.

When I returned to Dublin airport and asked again at SIXT desk they refused to provide any information on my booking and only refer me back to Ryanair, and of course at the end Ryanair just claimed me as no show and charged me full amount on a service I did not have a chance to enjoy with even a minute.

What a brilliant way to make money with the so call partnership so both parties can avoid all the responsibilities when the customer is trying hard to get a resolution.

The process was quick and straight forward. They fact that they take payment from debit cards was a bonus plus the transparency with the rental deposit which was very reasonable compared to many of their competitors was a plus. I will definitely be looking at using their service in future.

Great service and very quick on pick up. Directions were good
My car not available so immediate upgrade at no cost
Return was really easy.

I rented an SUV, which was really great to drive. The whole experience was easy, quick and efficient. I have only good things to say about my experience with SIXT in Switzerland.

From my first contact with Sixt at Tampa airport to dropping the car off everything was exceptional. The car was perfect. The staff at pick were also fantastic. Value for money was great. All round the experience woth Sixt at Tampa airport was the best car rental experience i have ever had anywhere in the world.

Very happy with hire of compact SUV from SIXT Glasgow Central. Very efficient pick up and drop off. Car clean and new.

Also pleased to find that dropping off in London instead of Glasgow wouldn't have cost much more, although in end dropped off in Glasgow where we picked up.

Great company who very much care about customer service.

Great service and new cars. The best car hire company I have used.

Easy to book and nice straight forward service. Staff are lovely and very friendly. No messing about with drop offs. Only gripe would be no parking, but I guess that’s not easy at the airport.

Excellent experience with SIXT at Philadelphia International Airport. I originally booked a standard vehicle but received a Mercedes-Benz GLE 350, which was fantastic for our family trip.

We had the car for 21 days and drove over 1,500 miles. It was comfortable, spacious and perfect for longer journeys. During the rental I had a low coolant warning and low tyre pressure, so I took the vehicle back to SIXT. The staff dealt with it quickly, topped up the coolant and tyre pressure, and I was back on the road without any hassle.

The price was excellent, the booking included Loss Damage Waiver, and the whole pickup and return process was straightforward. On return, the vehicle was checked and everything was completed smoothly.

Really impressed with the value and service from SIXT PHL. After this experience, I’ll definitely use SIXT again for my future US trips. Highly recommended.

Im in love with SIXT. 🫶🏻

Brought the car back a day early, they still sent me a final bill based on the full amount.

Never again.

Had excellent service from the Kings Cross branch. The team upgraded me to lovely BMW at no extra charge and showed me how everything worked including ensuring I was able to connect my iPhone to its apple play. The car was lovely and made our long journey a breeze. Would highly recommend.

The guys at Sixth are wonderful they go out of their way to help you they assess what you need and then give you the correct vehicle. I've never had a problem with Sixth and I look forward to using them again.

Running scams. Sixt attempt to charge you for damage to cars that occur prior to pick up. Sixt are trying to charge me for rim damage. Luckily I took photo of the car and all rims prior to pick up. Be warned, ensure you document the condition of the car prior to pick up. The fact they even try this behaviour is Disgraceful and wasting peoples time and money. Picked the car up on the 1st-3rd. I would avoid sixt at all costs in future and would recommend people do the same or be extremely careful and aware of their scams. I think on a review a few before me they have also tried to charge other people for what looks like could be the same car and damage. Also strange they have all these people leaving rather generic 5 star reviews for how great they are ( not many 3 or 4 star reviews) Then real one star reviews actually documented problems dealing with them.

Very happy with the car rental from Sixt at Athens International Airport. Employee at the airport counter was knowledgeable, helpful and fast, it took less than 10minutes and a couple of signatures to get the car and we were on our way to the parking to pick up the car.

Fast friendly service. We picked up our car from the guys at the Marriot hotel rome. Great car highly reccomended

Turned up for a car and they wouldn’t give me on. All fully paid. Have used them countless times. Never again. Weekend ruined.
AVOID SIXT.