What Is the SIXT Shelby Mustang GT-S?

What Is the SIXT Shelby Mustang GT-S?

Last Updated August 8, 2023 | C.J. Tragakis

The SIXT Shelby Mustang GT-S is a limited edition supercharged rental car with over 600 horsepower. The striking black and orange colors, unique body components, and upgraded performance make them stand out even amongst other Shelby Mustangs. Though only 21 have been made, anyone can rent them at a designated SIXT location.

2019 Ford Mustang SIXT Shelby GT-S Specs
Specs2019 Ford Mustang SIXT Shelby GT-S
MSRP $90,000
Daily Rental Price $128-300/day (approx)
Engine Supercharged 5.0 liter V8
Horsepower 600+ hp
Torque 500 lb-ft
Transmission 10-speed automatic
Body Style 2-door coupe
0-60 mph 3.6 seconds
Quarter Mile 11.7 seconds @ 124 mph
MPG (stock) 19 comb/ 25 highway/ 16 city

Shelby Mustang Rental History

Throughout Shelby’s history, performance-oriented rental cars have played an important part in offering powerful, fun cars to the general public. For those that weren’t able to enjoy a sports car as their daily driver, they could spend a few days living the dream in a Mustang they wouldn’t otherwise get to drive.

The previous Mustang rental car flagship, the Hertz Shelby GT-H, was available in 1966, 2006, and 2016. Now, with Hertz featuring limited-edition Camaro ZL1s instead (we know, we know), the torch has been passed to another company: SIXT.

They’ve collaborated with Shelby to create an insane rental car, the Mustang GT-S. And unlike Hertz, they’ve added a supercharger under the hood, the first time a rental Mustang has ever offered one.

What Is SIXT Car Rental?

Though it’s the new kid on the American block, SIXT has been a popular car rental company in Europe for decades. Founded in Germany in 1912, the company also boasts car-sharing and ride-hailing services. They provide mobility solutions in more than 100 countries around the world. They first entered the U.S. market in 2011 with branches in Florida.

SIXT Shelby Mustang GT-S Exterior

Shelby’s GT-S SIXT Mustang is immediately distinguished by its Shelby GT front fascia and bold colors. There’s a deep draw vented hood with large racing stripes that go all the way to the rear of the car.

2019 Black SIXT Shelby Mustang GT-S Exterior

The GT-S features the prominent signature orange that SIXT uses for its brand. You can have the car in black with orange stripes or orange with black stripes. There’s also a unique "SIXT Supercharged" fender emblem, Shelby badging behind the rear windows, and “Shelby GT-S” side stripes.

2019 SIXT Shelby Mustang GT-S Exterior Emblem

The Shelby 20-inch CS-3 wheels (black on the black cars, chrome powder on the orange cars) are wrapped with Shelby X-COMP tires. To top it all off, there’s a rear decklid spoiler.

SIXT Shelby Mustang GT-S Interior

The interior of the SIXT Shelby Mustang isn’t dressed to the nines, but it does have some upgraded touches. The seats are Shelby leather, black with orange accents and contrast stitching. The floor mats are also embroidered with the Shelby name.

2019 SIXT Shelby Mustang GT-S Interior Seats

The car also features unique Shelby lighted door sill plates, plus a dashboard plaque showing the production number. The Shelby SIXT Mustang is included on the official Shelby registry.

Apart from that, you get all of the niceties of the regular 401A package. That means extras like the 12-inch LCD digital instrument cluster, heated steering wheel, navigation, and blind spot monitoring system.

Though the ride is a bit rougher than your standard Mustang, it’s a remarkably practical rental option. There’s still 14 cubic feet of trunk space, more than enough for two people.

SIXT Shelby Mustang GT-S Engine and Performance

Like many of the V8 Mustang rental cars out there, the SIXT Shelby GT-S doesn’t pull any punches. Quite the opposite. The Shelby-provided supercharger takes the horsepower output from a stock level of 460 hp to over 600 hp. This is absolutely spectacular for a “regular” rental car that can be picked up at the airport. It offers a great way to spice up your next vacation or business trip.

2019 SIXT Shelby Mustang GT-S Supercharged Engine

A supercar rental with that much horsepower could cost you $1,000 or more per day. The SIXT GT-S offers it for just a bit more money than a luxury SUV or passenger van rental.

Along with the bonkers power output, you get upgraded Brembo brakes to help you corner and stop. Plus, the suspension is upgraded to be smoother, using Ford Performance springs and sway bars. Just because you’ve got the quickest rental car around doesn’t mean you have to sacrifice ride quality. Still, this car is a beast that won’t be as tame as your average econobox.

2019 Orange SIXT Shelby Mustang GT-S Burnout

There’s no manual transmission available, sadly. This is probably better for the average driver, though, and the 10-speed automatic transmission is great for quick shifts. With a Shelby by Borla cat-back exhaust, this is a fantastic sounding Mustang.

Where to Find the SIXT Shelby Mustang GT-S

Sadly, with just 21 cars built and 20 used by SIXT, the Shelby GT-S is going to be tough to find. There are currently only a handful of locations where the car is available. The locations are all in warm climates, namely Las Vegas, Southern Florida (Miami and Ft. Lauderdale), and Southern California (Los Angeles). It is a guaranteed car, however, so you can specifically reserve the GT-S and be assured that you won’t end up with an EcoBoost.

What Does it Cost to Rent a SIXT GT-S? The price of the SIXT Shelby Mustang GT-S starts at around $128/day but can go up to $350/day or higher, depending on demand. That’s somewhat expensive, but not bad considering that a run-of-the-mill 4-cylinder Mustang rental can easily cost $75-125/day.

2019 SIXT Shelby Mustang GT-S Exterior Rear

Keep in mind that you’re also limited to a certain distance of travel per day, typically from 175-350 miles. After that, you’ll be charged for each additional mile driven, typically from $0.83-0.87.

Can You Buy a SIXT Mustang?

Yes, you can buy a SIXT GT-S after they go through their allotted rental mileage. In fact, one of the 20 SIXT Mustang GT-S models has already reached its mileage limit for rentals and was put up for sale to the general public!

A black one has popped up on eBay, offered by SIXT. The price decreased after several rounds of auctions ended without a sale. At the time of writing, this GT-S is offered for a “buy it now” price of $85,000. It has just over 12,000 miles on it.

If you do end up buying one of these spiced-up Mustangs, you can send it back to Shelby for even more performance upgrades. These include an upgraded supercharger, extreme cooling package, and wide body kit.

You may soon see them at your local Mustang meet-ups!

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Sources: 2019 Shelby GT-S Mustang Is Just for SIXT's Rental Fleet, Ford Authority | The Sixt Edition Shelby GT-S Is the 600-horsepower Rental Rocket of Your Dreams, MotorTrend | SIXT Is Bringing a New Exclusive Supercharged Shelby Mustang to the Streets, Sixt | 2019 Ford Mustang Shelby GT-S Is a Rental Car We Can Dig, Car and Driver

Image Credit: SIXT | Shelby

This article was researched, written, edited, and reviewed following the steps outlined in our editorial process. Learn more about CJ's editorial standards and guidelines.