In 1961, Takahashi became the first Japanese rider to win a motorcycle Grand Prix riding a 250cc Honda to victory at Hockenheim.

Takahashi finished 9th in his single Grand Prix outing, thus he scored no championship points.

In the 1995 24 Hours of Le Mans, his team competed with a Honda NSX, winning the GT2 Class and finishing eighth overall.

In 1994, he formed Team Kunimitsu to compete in the inaugural JGTC season, running a Porsche 911 RSR Turbo in the GT1 class alongside Keiichi Tsuchiya.

Team Kunimitsu won their first Drivers Championship in 2018 with Naoki Yamamoto and 2009 Formula One champion Jenson Button behind the wheel of the #100 Raybrig Honda.