Hermanos Rodríguez in Mexico City, and Gethin was back on form, qualifying a season best 10th, over half a second ahead of Hulme. He raced strongly again, keeping the faster car of 1964 world champion John Surtees, in the car bearing his name, behind for a number of laps. However, the McLaren's reliability issues reared their ugly head again, and he slowed and finally stopped with engine failure on lap 28. The season ended with Gethin in 23rd in the world championship, with just 1 solitary point earned in Canada. 1971 Gethin remained with McLaren for 1971, in a team now reduced to two cars, with Gethin partnering Hulme for another year. The first qualifying session at Kyalami went badly for the Englishman, who finished the session 11th, half a second behind his more illustrious teammate and 1.8 seconds behind pole man Jackie Stewart, driving for Tyrrell. In a race where Hulme was only denied victory by suspension problems four laps from the end, Gethin dropped back very quickly and retired just 7 laps in with a fuel leak. The Montjuïc Circuit was the venue for the Spanish Grand Prix, which was next on the calendar. Gethin took a career best 7th, only 0.9 seconds behind Jacky Ickx's Ferrari on pole and over three-tenths ahead of Hulme. He fast dropped behind Hulme and the second Ferrari of Mario Andretti, and when things straightened out he was down in 10th, behind François Cevert's Tyrrell and the Lotus of Emerson Fittipaldi as well. However, the retirements of Andretti and Fittipaldi left him 8th, which is where he finished the race – depressingly he had been comfortably outperformed by Hulme, who had taken 5th. Gethin's first appearance at Monaco which was the next challenge, and Gethin did not impress in qualifying, being down in 14th, 1.6 seconds behind Hulme and almost four seconds behind Stewart's pole time. He dropped a further place on the first lap, to Rolf Stommelen's Surtees. He gradually gained places, however, due to others' retirements and a good overtake on John Surtees. He ran as high as 11th before he hit the barriers on lap 23. He won the 1971 Italian Grand Prix with the fastest average speed in Formula One history (until the record was broken by Michael Schumacher in the same race in ), but this was his only podium finish. There was only 0.01 seconds between