In 2006, Jaafar competed in Asian Formula Renault 2.0 for the Macanese outfit Asia Racing Team at young age of 13. He finished third in the championship, eighty–one points behind champion Pekka Saarinen, taking four podiums during the season.
In 2007, Jaafar competed in Formula BMW Asia. Jaafar was given special allowance to gain an international license to compete in the series when he was fourteen. Jaafar won the championship but not before the following February due to the appeal of a technical infringement.
After Round 22, and following the receipt of a post-race scrutineering report, Race Stewards issued a Decision to exclude the cars of Jaafar and team-mate Jack Lemvard for a technical infringement of the regulations. In view of the severity of the offence and the fact that the same team had contravened the technical regulations on an earlier occasion during the season, the decision also included the exclusion of CIMB Team Qi-Meritus from the 2007 championship.[1] The decision put Jaafar second in the drivers' classification at the end of the season, just one point behind Zahir Ali. Meritus submitted an official appeal on the disqualification of their drivers in the race and their exclusion from the team championship.
The Federation Automobile of Sport China confirmed that they received the letter of appeal from the team dated 5 November 2007. Team Qi-Meritus learned that the appeals lodged with FASC against the decisions of the stewards at Zhuhai were overturned in favour of the drivers and team. The decision meant that Jaafar was handed back the drivers' title and Qi-Meritus also won the constructors' trophy.[2]
Jaafar contested two seasons in Formula BMW Europe in seasons 2008 and 2009, driving for Holzer Rennsport and Eifelland Racing respectively; finishing fourteenth and ninth in the two seasons.