Voisin and Slater to drive for Andretti in Madrid Rookie Test

Written by Teagan Crump

Andretti Formula E have announced that Britons Callum Voisin and Freddie Slater will be joining them for the Madrid Rookie Test on March 22.

Image credit: Formula E

In 2026, Callum Voisin raced in the Asian Le Mans LMP3 category. He got one podium and one pole position, finishing the year in eighth in the standings. The Briton will also race in Porsche Carrera Cup GB after being picked as their Porsche Junior for 2026.

Voisin first tested Formula E machinery in 2025, joining Cupra Kiro for the Berlin Rookie Test. He finished fourth in the test and drove alongside Bianca Bustamante.

Following the news, Voisin said:

“I’m very excited to be joining Andretti Formula E for this year's rookie test. It will be my first time driving  with Andretti and at the Jarama Circuit in Madrid, so I’m very much looking forward to the opportunity. I  had a positive test last year at the Berlin Rookie Test, so I can't wait to build on what's been a fun and  different experience to what I'm used to. I can't thank Andretti enough for the opportunity and I can't wait  to get going.”

Freddie Slater is the reigning Formula Regional European Champion and currently races in Formula Three, where he sits third in the standings with 18 points after two. He also has one podium. In 2026, Slater has also raced in the Formula Regional Oceania Trophy, where he finished second in the standings with three wins and a further three podiums.

The Madrid Rookie Test will be Slater's first time in Formula E machinery.

In a statement, Slater said:

“Obviously, I'm very excited to get my first taste of Formula E machinery. It's been something I've been  looking forward to for a while now, having always wanted the opportunity to drive an all-electric racecar.  The Andretti name is incredibly iconic in motorsports, so having the opportunity to work with such a  historic and successful organization means a lot. I just can’t wait to get started.” 

Madrid Rookie Test - Driver Line-ups

Porsche - Elia Weiss, Ayhancan Güven

Cupra Kiro - Bianca Bustamante, Cian Shields

Envision Racing - Zak O'Sullivan, Ella Lloyd

Lola Yamaha ABT - Hugh Barter, Richard Verschoor

Jaguar - Juju Noda, Bryce Aron

DS Penske - Daniil Kvyat, Nikita Bedrin

Mahindra Racing - Kush Maini, Théophile Naël

Citroën Racing - Joshua Dürksen, Théo Pourchaire

Nissan - Victor Martins, Abbi Pulling

Andretti- Callum Voisin, Freddie Slater