 Tyrrell started making its own cars towards the end of 1970 , and March 's 1971 program in Formula One was much reduced , with no recognised front @-@ running driver . The Firestone and STP sponsorship was insufficient and Mosley failed to attract a large backer for 1971 . Motorsport author Mike Lawrence has suggested that the shortfall forced him into short @-@ term deals , which maintained cashflow , but were not in the best long @-@ term interests of the company . Mosley negotiated a deal for the team to use Alfa Romeo engines in a third car , bringing much needed funding . The engines proved uncompetitive , and his hopes of an ongoing partnership with the Italian automobile manufacturer were not met . Nonetheless , March again finished third in the constructors championship , and works driver Ronnie Peterson , in a Cosworth DFV @-@ powered car , was second in the Drivers ' Championship . March 's financial woes continued : the company had lost £ 71 @,@ 000 at the end of 1971 . Mosley and Rees disagreed over how to rectify the situation and Rees left March early in 1972 . 
 Tyrrell started making its own cars towards the end of 1970 , and March <a href='null_genetive' title='1'><mark>'s</mark></a>1971 program in Formula One was much reduced , with no recognised front @-@ running driver . The Firestone and STP sponsorship was insufficient and Mosley failed to attract a large backer for 1971 . Motorsport author Mike Lawrence <a href='been_done' title='2'><mark>has</mark></a> suggested that the shortfall forced him into short @-@ term deals , which maintained cashflow , but <a href='negative_concord' title='3'><mark>were</mark></a> <a href='negative_concord' title='4'><mark>not</mark></a>in the best long @-@ term interests of the company . Mosley negotiated a deal for the team to use Alfa Romeo engines in a third car , bringing much needed funding . The engines proved uncompetitive , and his hopes of an ongoing partnership with the Italian automobile manufacturer <a href='uninflect' title='5'><mark>were</mark></a> not met . Nonetheless , March again finished third in the constructors championship , and <a href='uninflect' title='6'><mark>works</mark></a> driver Ronnie Peterson , in a Cosworth DFV @-@ powered car , was second in the Drivers <a href='null_genetive' title='7'><mark>'</mark></a>Championship . March <a href='null_genetive' title='8'><mark>'s</mark></a>financial woes continued : the company <a href='been_done' title='9'><mark>had</mark></a> lost £ 71 @,@ 000 at the end of 1971 . Mosley and Rees disagreed over how to rectify the situation and Rees left March early in 1972 . 
Tyrrell started making its own cars towards the end of 1970 , and March  1971 program in Formula One was much reduced , with no recognised front @-@ running driver . The Firestone and STP sponsorship was insufficient and Mosley failed to attract a bigass backer for 1971 . Motorsport author Mike Lawrence done suggested dat da shortfall forced em into short @-@ term deals , which maintained cashflow , but ain't in the best long @-@ term interests of the company . Mosley negotiated a deal for the team to use Alfa Romeo engines in a third whip , bringing much needed funding . The engines proved uncompetitive , and his hopes of an ongoing partnership with the Italian automobile manufacturer was not met . Nonetheless , March again finished third in the constructors championship , and work driver Ronnie Peterson , in a Cosworth DFV @-@ powered car , was second in the Drivers  Championship . March  financial woes continued : the company done lost £ 71 @,@ 000 at tdaend of 1971 . Mosley and Rees disagreed over how to rectify thdaituation and Rees left March early in 1972 .