[6] In 2008 Asmer was BMW Sauber's second test driver alongside Christian Klien[6][7] and competed in seven of ten rounds in the GP2 Series for FMS International.

[12] In February 2011 Asmer returned to motorsport when he tested a British Formula 3 car for the Double R Racing team at Silverstone, during which he set competitive times.

Asmer qualified 10th[14] and after a bad start found himself in last place,[15] but showed good race pace and overtaking nous to finish 7th.

[16] Following his return to racing Asmer was interviewed by Autosport.com and revealed that he had spent his time out of professional motorsport "testing some cars, doing karting and ... doing some driver coaching".

[17] Despite these claims it was announced on 28 July 2011 that Asmer would return to British Formula 3, again racing a Dallara-Mercedes for the Double R team at the Spa-Francorchamps round.

[22] During this weekend it was also announced that Asmer had sponsorship in place to take part in the 2011 Macau Grand Prix,[23] where he would drive a Dallara-Mercedes for a three-man Double R Racing team, alongside GP3 champion Valtteri Bottas and current GP3 Series racer Mitch Evans.

[24] In an interview with Autosport carried out over the Macau Grand Prix weekend Asmer reiterated his desire to get back into racing full-time, and said his future may lie in DTM.