Take a Spin in the 2018 Saleen S1 as Series 55 Revs Up

The Summer season arrives in Forza Horizon 4 alongside the elegant 2018 Saleen S1 available to unlock in Series 55.
This mid-engine, rear-wheel-drive supercar packs a 2.3L four-cylinder turbocharged engine capable of 456 brake horsepower and features a sleek, stylish modern design. It’s a perfect match for the acquaint roads of Horizon Britain.

Here are the Festival Playlist unlock prerequisites so you can get this road-trip started:
- 50% Completion: Horizon Backstage Pass
- 80% Completion: 2018 Saleen S1
Remember that Horizon Backstage Passes allow you to redeem one previously released exclusive car, and in Series 55, you can earn one each week plus another from the overall series completion. That’s a total of five passes, so if you’re eyeing some cars to complete your car collection, there’s never been a better opportunity to fill those spots in your car collection.
Series 55 is available in Forza Horizon 4 until December 15, 2022 and includes holiday treats tucked under the Festival Playlist tree. You’ll need to complete 80% of the Festival Playlist over the next four weeks to unlock the 2018 Saleen S1, so let’s dive into the events and challenges that you should complete to earn it.

Monthly events include our Monthly Rivals on the Broadway Village Circuit. Set your fastest clean lap to contribute completion towards the Festival Playlist. Meanwhile, head into Online Adventure and qualify for the roster to further boost your completion.
This week is all about the Summer season, which is active through Thursday, November 24. Here's what you can look forward to unlocking:
- 50% Completion: Horizon Backstage Pass
- 80% Completion: 1973 Mazda RX-3
Capture any MINI at Arthur’s Seat to unlock a Super Wheelspin in this week’s Photo Challenge. Over in the Weekly Forzathon Challenge, you’ll be driving the 1993 Jaguar XJ220. Don’t dream it, drive it!
Then spend those hard earned Forzathon Points in the Forzathon Shop where you score the 2007 Formula Drift #117 599 GTB Fiorano and the 1962 Ferrari 250 GT Berlinetta Lusso, as well as the Sleepy emote and the Reindeer Antlers to wear on your character!

The Trial is a Christmas Barbecue and on the menu is a hard-to-find 1999 Lotus Elise Series 1 Sport 190 for those who cooperate and defeat a team of Unbeatable Drivatars.
It’s all about Nine & Three Quarters in this week’s Showcase Remix. Get ready to race the Flying Scotsman towards Edinburgh while behind-the-wheel of a 1959 Ford Anglia 105E.
Over in the Summer Games, you can win a Santa Hat for your character by simply participating. Ah, the joys of the festive season! Meanwhile, a trio of Super Wheelspins can be yours in the Seasonal PR Stunts. This week, look out for The Great Ridge Danger Sign, the Bamburgh Dunes Speed Trap and the Oldweir Speed Zone.

Celebrate a “Merry Christmas” in this week’s Seasonal Championships. That Quick Chat phrase can be unlocked in The Knight Before Christmas, while Abarth on the Hearth is rewarding the 1975 FIAT X1/9 and over in the Solstice Sea, you can win the 2015 Honda Ridgeline Baja Trophy Truck.
That’s everything you can find in Horizon Britain this Summer! Remember to check back every week throughout Series 55 for your chance to unlock a new Horizon Backstage Pass, and don’t forget to discuss the latest Festival Playlist content and rewards over on the Forza Forums.
See you at the Horizon Festival!