SIXT Car Hire - Heathrow Airport T5 (LHR)

Reviews

• BA

  Bilal Ahmed

  Oct 5, 2026
  2.0
  Very disappointing experience for a premium rental. I booked a BMW X3 and upgraded at the counter to a Mercedes GLS 450, paying around £2,700 in total, with a child car seat included in my booking. The car seat wasn't in the vehicle at collection, and I only discovered this after driving to my hotel to pick up my family. I had to go back to the branch, where a seat was handed to me with no explanation and the staff member walked off. After waiting 5–10 minutes, I went to reception, where one employee told me without looking up from his screen that they don't install car seats, and the other didn't respond at all. I only wanted to be shown how it worked. When someone finally helped, he told me customer service wasn't his job. The booking desk clearly never told the pick-up team about the car seat, and the staff showed little interest in helping a family that had just flown in from the US. To their credit, the branch manager followed up after my feedback and refunded the car seat fee. But at this price point, the service on the day fell well short of what you'd expect.
• AM

  Arne me

  Sep 29, 2026
  1.0
  This should have been our second rental with sixt, after the positive experience we had two years prior in Turkey. We ordered online, paid and up to the pickup everything worked smoothly. At the pickup we were informed that our account was flagged, that the problem can not be solved within 24h and we should look out for a different rental company. The employers were very friendly but unable to help us further than advising us to contact support. Here we faced an AI agent, which was not useful or helpful at all. A human agent took over who could not find any evidence of a flagged account and redirected us to the AI agent and left us with no results. Why we were flagged is still unknown to us. We got refunded and that was the end of this. We luckily found a different company nearby who now has a new, permanent customer.
• SA

  Salman AlSairafi

  Sep 28, 2026
  1.0
  Absolute worst experience with a rental company. We had a flat tyre and it was impossible to get Sixt to do anything about it. Waited for over 4 hours and ended up getting help from another tyre company. Sixt call center either doesn't pick up or keeps saying that they can't hear me even though I can hear them clear as a bell. Even other companies I called could hear me loud and clear, so not sure why Sixt can't. Resolved through another company. Can't wait to hear what they say when we return the car. We cancelled our follow on booking from Sixt. Might as well go with a cheaper rental company as the "premium" isn't there. I'll probably get a generic (automated?) reply to this post that goes something like "We're disappointed to learn that we fell short your expectations." Stay disappointed.
• CC

  Carmen Chavez

  Sep 22, 2026
  1.0
  This post is from a November 2023 transaction. Google took down my original post due to the screenshot not being formatted correctly Heathrow Sixt is entirely different from others - the only word I can think of is “slimy”. A bait and switch situation at time of rental and a parking charge for a violation I had already paid for and provided proof of payment. And now, I can’t get any response from my last request to reimburse the violation charge. Just radio silence. Instead of paying $1844 (the booking fee for a five seater) we were told we booked a vehicle the size of a Mini Cooper that could only seat four and they would let us take one of their bigger cars for a reduced rate. Final bill $3277. What could we do? We were on a tight schedule and the car was necessary. We were trapped. In addition, they billed me 120 GBP for a parking violation I had already paid directly to Oxfordshire gov parking in the required amount of 35 GBP. Nice markup, Sixt! And no response on my request for reimbursement. My recommendation for Heathrow Sixt, stay away. Very far away. I will continue to fight this leveraging the social media outlets. Caveat emptor!
• DN

  Debbie Norbury

  Sep 21, 2026
  2.0
  We hired a car 22 August to 10th September, the guy who sold us the car rental was amazing ( we gave him a 5 star review) When we returned the car we couldn't find the drop off point, we parked at the front of sofitel hotel, my husband ran into sixt and asked how to return the car, we were thrilled it was the same guy who sold us the rental! He said not to worry he would run the car round to returns, he walked around the car and checked for damage, as we already knew, he said "no damage, great! Have a safe flight" he said shook both our hands and off we went. On our return home we got an email from Sixt with a bill of £1360.80 for work to cover a 10cm scratch! We were shocked and upset about this, we knew full well the car had no scratch on it. We have contacted customer service, damage service, emailed, whatsapped. We haven't heard back. This is either a scam or a scratch was caused after we left, either way we are both absolutely gutted this happened to us by a company we trusted. Please be aware!

Frequently Asked Questions About SIXT Car Hire - Heathrow Airport T5 (LHR)