SIXT rent. share. ride. plus.

Review by eFreeware

SIXT is a free app from the rental company of the same name, and it gathers the company's mobility services into one place: car rental, carsharing, ride hailing, a car subscription and electric vehicle charging. The app covers a worldwide network of more than 250,000 cars, over 105 countries and 2,000 stations, and has been installed more than 5 million times with a 4.8 average from 111,681 ratings. The main reason to consider it is convenience: one login covers booking, check-in and the key to the car.

What separates this from a plain booking tool is what happens after you reserve. The developer says the app works as a digital key, so you can check in online, skip the counter and open the vehicle from your phone. The app also promises navigation to the pickup station, which matters in an unfamiliar city where the last few blocks are usually the hardest part of a rental.

I'd treat it as a travel utility rather than something you open every day. If you rent cars a few times a year, or you want a single account that can also call a taxi or start a subscription, the breadth is the appeal. If you rarely travel and have no interest in the SIXT fleet, there is little here to pull you in.

Who the SIXT app suits

The clearest fit is someone who already rents cars with SIXT. Because the app keeps you signed in and stores a profile, the developer describes booking in seconds using predefined details, and all current reservations can be managed in one place. That is the kind of thing that pays off on repeat trips rather than a one-off rental.

Business travelers and frequent flyers are another obvious group. The fleet is pitched as premium, running from convertibles to SUVs, and the app is built around getting you from arrival to car with as little friction as possible: check in before you land, walk to the vehicle, open it with the phone. Anyone who has queued at a rental counter after a long flight will understand the value of that.

It also suits people who want more than rental from one account. Ride hailing, taxi and limousine bookings sit alongside the rental side, and the car subscription offers a fixed monthly price for those who would rather not own a car. The app is less compelling for someone who only needs an occasional short trip and has no SIXT account or plans to create one.

Booking a rental and choosing the car

The rental flow is the core of the app. You search for a station, see what is available, and reserve a vehicle, with extras and protections added per booking. The part I find most interesting is the choice window: the developer says you can pick your favorite vehicle from the fleet up to 30 minutes before the rental period begins. For anyone who cares which model they end up in, that is a meaningful amount of control.

The fleet is presented as new and premium, from high-end convertibles to premium SUVs, and the app is the place to browse it. Station information includes how to reach the location, and the app navigates you there rather than leaving you to copy an address into another tool.

Once a booking exists, it stays visible in the app with its details, and it can be adjusted if plans change. I'd expect that to be most useful for trips where the return time or the vehicle itself might shift, which is common enough when travel schedules move.

Digital check-in and using your phone as the key

The standout feature is the digital key. Online check-in is meant to remove the wait at the counter, and the app then opens the rental car directly. That turns the phone into the thing you need at the vehicle, rather than a piece of paperwork you collect first, and it is the sort of detail that shapes whether a rental feels quick or tedious.

Pickup and return are described as easy, with no hidden costs and customer support around the clock. Support can be reached from inside the app, which is a sensible place for it: if something goes wrong with a booking, you are already in the tool that holds the details.

I would not read the digital key as a promise that every location works the same way. It is described as part of the SIXT rental experience, and it is the feature most likely to decide whether this app feels like an upgrade over booking on a website.

Carsharing, ride hailing and the car subscription

Beyond rental, the app pulls in several other services under the same login. Carsharing is offered without limits on cars, duration or drop-off points, and it works at any SIXT station as well. That last part is the practical bit: you are not tied to returning the car where you collected it, which makes short one-way trips far easier to plan.

Carsharing is limited to Germany and the Netherlands, so it is a regional option rather than something you can count on everywhere the app operates. Ride hailing covers taxi and limousine services worldwide, which gives the app a second role on trips where you would rather not drive at all.

The car subscription is the most different proposition: a flexible service at a fixed monthly price, described as an all-round package. For someone who needs a car for a stretch of months without buying one, that sits between renting and owning. SIXT Charge rounds things out by letting you charge any electric vehicle through the app, which is a small but useful addition for drivers of EVs.

What the app costs

The app itself is free to download. It carries no advertising and no in-app purchases, so nothing in the interface is trying to sell you something on top of the service you came for.

Once you are logged in you can see current prices and special offers and book using your saved profile, with exclusive deals surfaced for you. What a given rental or subscription costs depends on the vehicle, the location and the dates, so the app is a window onto SIXT's pricing rather than a product with a fixed cost of its own.

How it compares with the alternatives

The obvious comparison is booking directly with a rental company through a website or a general travel platform. Those can be fine for a single reservation, but they rarely carry a digital key, in-app navigation to the station or a stored profile that speeds up the next booking. The trade-off is that this app is tied to one company's fleet and stations, so it is not a way to compare brands.

Against ride hailing services, the difference is scope. A dedicated ride app does one job, while SIXT covers taxi and limousine bookings alongside rental, carsharing and a subscription. If your trips mix driving yourself with being driven, keeping that in one account is tidier than juggling several.

Car subscription services are a narrower category, and SIXT's version is one option among them, with a fixed monthly price and a flexible arrangement. Carsharing memberships are the closest match to the Germany and Netherlands service, though those are usually bound to a single city network rather than extending to rental stations. The app's advantage is that all of these sit behind one login, which is also its limitation: everything runs through SIXT.

A single account for most of your ground travel

The SIXT app suits anyone who rents cars regularly, and the digital check-in and vehicle unlocking are the features that make it more than a catalog. Add ride hailing, carsharing in Germany and the Netherlands, a subscription option and EV charging, and the case for keeping one account rather than several becomes easy to see.

It is not a comparison tool, and it will not help you shop across rental brands or find the cheapest car in a city. It is SIXT's own front door, and it is built for people who have decided to use SIXT or are willing to. If you travel often enough to care about skipping the counter, that is a reasonable trade. If you rent once in a while and have no preference for the brand, a general booking site will do the job.

For frequent renters, business travelers and anyone who wants taxi, carsharing and rental under one login, this is a well-established app with a strong rating behind it. I'd install it before your next trip rather than at the airport, so your profile and payment details are ready when you need a car.

What's new in version 26.38.1-21167

This release contains bug fixes and performance improvements.