The Ferrari 126CK was, by common consent among the drivers who raced it, a genuinely difficult car — brutally powerful in a straight line thanks to its pioneering turbocharged engine, but afflicted with chassis and handling deficiencies that made it a liability through slow, twisty corners. Jarama, tight and technical with barely any meaningful straight, was close to the worst possible circuit for a car built around straight-line power at the expense of cornering grip. Gilles Villeneuve took pole position anyway, through what teammates and rivals alike described as simply superhuman car control, using sheer commitment to compensate for a chassis that wanted to go anywhere except where he pointed it.
The race that followed became one of the most studied defensive drives in the sport's history. Villeneuve led from the start, and for the entire seventy-plus laps that followed, a train of faster-cornering, more balanced cars — Jacques Laffite's Ligier, John Watson's McLaren, Carlos Reutemann's Williams, Elio de Angelis's Lotus — queued up behind him, each looking for the overtaking opportunity that Villeneuve's Ferrari, if it slipped even slightly, would surely offer through Jarama's slow corners.
It never came. Villeneuve drove with a precision that left no gaps to exploit, positioning the unwieldy Ferrari perfectly on the racing line lap after lap, conceding nothing even as four cars queued directly behind him for over an hour of racing. He crossed the line still in the lead, and the covering pack was so tightly bunched behind him that the gap from first to fifth place at the chequered flag was just 1.24 seconds — a margin across five cars that remains, decades later, one of the closest finishes in the sport's history.