SIXT UK Reviews 

second time using sixt for car hire - no issues at all, would highly recommend. yes slightly more than other companies but more than happy to pay that for the quality of service.

Sen was really great and helpful. Was able to give an upgrade when my booked car was unavailable due to damage caused by previous driver.

Excellent service from an ultra quick pick up to a no nonsense hand back.

Their new system of quick key pick up is very good indeed.

Was given a better car than specified which was also great.

I genuinely wanted SIXT+ to work, but the experience has been frustrating from start to finish.

After paying a substantial joining fee and monthly subscription, I encountered repeated administration issues, poor communication between departments, and a lack of ownership when things went wrong. Promised callbacks did not happen, information provided by different teams was often inconsistent, and I spent far too much time chasing updates myself.

The replacement vehicle provided was not comparable to the vehicle I had originally subscribed to and was not suitable for my needs. Despite raising concerns, I felt the focus was on process rather than resolving the customer’s problem.

The concept of car subscription is excellent, but execution and customer service need significant improvement. For a premium-priced service, I expected a far smoother and more customer-focused experience.

Unfortunately, based on my experience, I would struggle to recommend SIXT+.

Refused a car hire when at the Luton office to collect the car, after running my driving license and a credit check!

This should have been done before arriving to collect the car and done when the booking was being processed.

I only have sp30 convictions, and as I drive around 20,000 miles per annum I don’t have a squeaky clean license in terms of points.

It is not abundantly clear what the criteria is when you book and pay. They also refuse to tell you the reason for refusal to hire which is unacceptable.

It should be transparent before you even click the button to proceed that your number of points or a low credit score will result in refusal of a vehicle, despite already paying upfront and a deposit.

I lost a days work today worth £457 because I had no car and wasted money on Ubers to and from their site totalling £28.

To top it off I didn’t get a full refund and charged a cancellation fee! WTF!

Not impressed!!

Excellent customer services, simple pick up process, and a good car selection.
I mainly use Sixt when I travel to Spain, but also used them a couple of times in the UK. I find it very easy in terms of pick up and drop off. I have the APP, booking can be easily managed in the APP. The cars are all very nice too.
I did have an email coming through after the last rental to say they found a scratch on the car. I explained it was already there when I picked up. The staff didn't do a check over so I assumed all fine so didn't take any photos.
They came back and didn't require any further action.
I appreciate the customer service but I would say probably best to either speak to staff when collecting or at least take photos if you notice anything, just in case.

Post rental we have been billed for excess insurance we never requested and fact told the operator at the hire desk it wasn't required as we have our own cover. We are now fighting Sixt to get a refund. They charged us without invoicing us, an invoice eventually arrived 5 days after the hire ended and a complaint raised. Customer services said the problem would be solved in 48hrs but I've not heard anything further.
Service would have got 5 stars but for the insurance. I would be reluctant to use them again without an up front guarantee that we would not be charged for the excess cover. It seems the add it as a matter of routine. The cost is twice the cost of the car hire!! Frankly, ridiculous.

We rented a van from SIXT at Lisbon airport. Despite long queues all was ok with the checking out of the vehicle. On the return we completely filled the half empty tank with fuel, as we always do with hire vehicles, close to the airport. Long queues and absolute chaos at the car drop off point. Once we were near the drop off point the passengers were told to get out of the vehicle with the luggage and once my husband was in the drop off area he was told to leave the key in the vehicle and he could go. On arrival home we have now had a fuel charge and a fuelling charge added to our toll charges. The toll charges we agree, but as for the fuel, we returned the vehicle with a full tank. Ensure you photograph the full tank indicator before leaving the car. SIXT are saying we returned the vehicle with only 3/8ths of fuel left. Impossible, we only used about half a tank or less the whole trip. SIXT are not accepting our receipt as proof of a full tank. I will never use SIXT again if they are going to use these tactics to extort money from customers.

We had to queue for 30 mins to return the vehicle at Lisbon Airport. This was not down to Sixt but all of the rental companies. All of the customers from each rental company were being told to leave the keys in the vehicles and staff were moving them as spaces became available. The whole process was chaotic.
I made sure that I had re fuelled the vehicle just prior to returning as my policy dictated.
On returning home, I am now being charged for only returning the vehicle with 3/8 of a tank of fuel and re fuelling costs.
This is totally unacceptable, I have told Sixt I have a receipt for the fuel but they do not seem to accept this. The receipt will show where I refuelled as well.
I would like to see proof, ie. a photograph of the fuel gauge and when it was taken from Sixt. This obviously won't be available as it was full on drop off.

Stay Away, I booked a category and was given a different category. Car was not clean.
Branch wouldn't reply, only when you fill a survey they would reply and nothing happens. Was promised a discount voucher that was never sent, even after the duration they claim. Again contacted customer service, who said they will let the branch know, and guess what? also the branch didn't respond.
Basically, once you have a problem with them, they will never try and bother to solve it.
Also, was funny when I asked Customer Service why it takes 20 working days to approve a voucher and they used the term "the higher ups need to approve it"! What a joke company!

Do not use, absolute scam. Returned car, documents signed to say no damage etc… it has been over 21 days and my deposit has not been returned. I have used many other car rental services in the past and never had a problem.

I recommend people use an alternative.

I use Sixt regularly globally, but mostly in the UK and I absolutely love the service, the staff, the ease of pickup, selection of cars available. I even cancelled my Enterprise Car membership (as they're so atrocious) and just use Sixt for both short and long term rentals now.

I didn't have to wait too long to pick the car up. I was pleased with the car I was given. It worked without any trouble and dropping it off was easy and quick.

Easy to book, car type identified, available on pick up, a friendly and helpful approach to the pick up process with helpful and practical guidance on sat nav etc.

I have been renting cars for years, but I think this may have been the first time with SIXT. The reason was that they were the only one offering a one off drive from Portugal to Germany. I only have good feedback for how my booking was handled by the Lisbon Airport Portuguese agent, Martin. Brand new car, an amazing VW Passat latest model, which saved my life 3 times during the 2500KM trip.
The only reason I am giving 4 stars (even though I can understand the reasons as they were explained) is the one off fee (quite high) as I dropped off the car in a different location (country).

I had a very disappointing experience with this car rental company. After returning the vehicle, they claimed there was trim damages on all four trims that we are confident did not occur during our rental. The process felt unfair and poorly handled, with little effort made to properly investigate our concerns.

Overall, we were not happy with their service and would not recommend this company based on our experience.

Great cars and always good customer service. Online check-in now provides a rapid key pick up service.

Booking made in Sydney Australia. Confirmed email stating pick up car at George Best City Airport. April 30. 2026.
Your representative called out to us as we approached the counter. I am not giving you the car as you are to old at 76.
He didn’t want to see my International Drivers document or my letter from my Dr.
He cancelled booking immediately. Sent us next door to Budget/Avis.
We got a car from them and they made my husband sign a waiver of damage form.
It was also £100 dearer.
We drove to our hotel and left the car parked for 3 nights in car park as we were too frightened to drive it.
This was a final homecoming for my husband as we had planned to visit memories and family.
This is Blatant discrimination.
Why was the booking taken in the first place.
My husband obtained his first driving licence February 1977 in Northern Ireland where he was born.

Ordered a Cupra Formentor “or similar” from Cologne Sixt. When I arrived, I was told all they had was a VW Taigo. Sixt tried to tell me this classed as “or similar”. This is of course a much smaller, compact SUV, as opposed to a premium intermediate SUV - and retails at about 60% of the price of the Cupra and has much less power. After some argument, Sixt agreed to “upgrade” me to a BMW 1 series - still a smaller and cheaper class of car - but I grudgingly accepted due to no alternative and needing to get going on my trip. Won’t be using Sixt again after this experience. Very disappointing and dishonest behaviour. Not recommended.

I have never made a formal complaint about any company in my life, which should demonstrate just how appalled I am by this experience.

The customer service I received was completely unacceptable from start to finish. I reserved a specific vehicle category, yet when I arrived there was no sign of the vehicle I had booked or any of a lower category than we received. Despite being told repeatedly that I was receiving a “free upgrade” because I had booked online, I was later charged €100 for that upgrade, despite the car we hired only being €73. 

The most frustrating aspect is that this was not mentioned once or twice—it was stated numerous times during the collection process. We were specifically told to ignore the charge displayed on the iPad and were reassured that the upgrade was free. Had we been told there would be a €100 charge, we would never have accepted it. In fact, we would have preferred the lower-category manual vehicle that we originally requested.

What makes this even more confusing is that we saw another customer before us receive an upgrade and be clearly informed of the additional cost. In contrast, we were repeatedly told our upgrade was free, with the only mention of a charge being on the contract, which we were specifically told to ignore as it was simply part of the process for recording which vehicle was leaving.

The company’s response has been to hide behind a signed contract while completely ignoring the circumstances under which that contract was presented. Customers are expected to trust the information being given to them by staff at the counter. If customers cannot rely on verbal explanations and assurances from employees, then the entire collection process becomes meaningless.

What makes this even worse is the complete refusal to acknowledge any possibility that misinformation was provided. Rather than conducting a meaningful investigation, the company has repeatedly responded with the same generic statements, effectively calling us liars while providing no evidence whatsoever to support their position.

I am genuinely shocked by the way this complaint has been handled. The lack of accountability, poor communication, and apparent willingness to charge customers for a supposedly “free” upgrade has completely destroyed my confidence in this company.

The experience felt less like customer service and more like being pressured into paying for something we neither requested nor wanted. The fact that I am still having to argue over a charge that was explicitly described as free is astonishing.

This has been, without question, the worst customer service experience I have ever encountered. I would strongly advise anyone renting from this company to scrutinise every charge, question every verbal assurance, and be extremely cautious before signing anything, regardless of what staff tell you at the counter.