In 1989, victory eluded Warwick in two occasions. The first was in the Brazilian Grand Prix, when a disastrous pit-stop cost him more than the 17 seconds he finished behind winner Nigel Mansell. But the real heartbreak came in the Canadian Grand Prix, when Warwick drove superbly and was leading the wet race, only to have his Cosworth engine fail on lap 40 while in second place. Ayrton Senna, who had passed Warwick for the lead on lap 38, would himself retire when his McLaren's Honda V10 blew 3 laps from the finish. As Warwick was lapping much quicker than those behind him, including the V10 Williams-Renault of eventual winner Thierry Boutsen, it is possible he could have scored his first Grand Prix win had he finished. Reliability issues plagued Warwick's season and cost him good finishes in other races as well, resulting in only 7 points for the season, the last of his 3 years at Arrows.