ATLANTA and SANTA MONICA, Calif. -

It appears that the New York Giants might not have been the only ones earning an upset victory Sunday night.

According to analyses of online traffic trends, the car brand that perhaps surprisingly stole the show and benefited significantly from Super Bowl advertising was Fiat.

The third-quarter commercial for the Fiat 500 Abarth wasn’t as hyped going into the game as some of the other spots from car brands, but it certainly appeared to cause a reaction once it aired.

The “provocative” spot led to a 2,388-percent spike in Edmunds.com traffic share for the Italian brand right after the ad aired, according to analysts with the Santa Monica, Calif.-based website. Fiat saw a cumulative gain of 138-percent, Edmunds noted.

The traffic share for the Fiat 500, specifically, jumped even higher. It climbed 3,354 percent just after the commercial, by far the most dramatic spike on Edmunds.com. Cumulatively, its share was also up 138 percent.

Over at AutoTrader.com, analysts also noticed how significant an impact the Fiat commercial had.

“The most unexpected result came from Fiat 500,” they shared. “On Sunday, over 65 percent of Fiat 500 searches occurred after the big game ad aired.”

Interestingly enough, the Chrysler ad featuring Clint Eastwood — the brand’s answer to last year’s buzz-worthy spot featuring Eminem — didn’t actually pull much consumer interest for the brand on Edmunds.com, though many were still talking about the emotion-evoking ad on Monday.

The site found that there was just a 13-percent hike in the share of Chrysler page views in the hour after the commercial.

“Chrysler set an almost unachievably high bar with last year’s ad, so in comparison, this year’s message simply fell flat,” said Jeremy Anwyl, vice chairman of Edmunds.com.

“The ad tried to capture the same mood that made last year’s commercial so effective, but America’s state of mind right now is different from where it was last year,” he continued. “Using the same formula, Chrysler didn’t elicit the same emotional response.”

Of course, Fiat and Chrysler joined 10 other brands rolling out Super Bowl spots, with some enjoying remarkable gains. Based on its analysis, AutoTrader found that Hyundai was the big winner.

The site noted that there were more than 30 car ads between 6 p.m. (EST) and 10:30 p.m. Among all the vehicles advertised, AutoTrader discovered six that generated the most consumer searches.

“From the data analytics, AutoTrader.com shows that Hyundai performed highest overall based on its pregame sponsorship and the commercials aired for the Elantra, Genesis and the Veloster by the first quarter of the game,” analysts noted. “Rather than getting one spike during the game, they had elevated activity across the length of the game on multiple car models.”

During the Super Bowl’s peak, it was found that the Chevrolet Sonic and Toyota Camry represented the biggest Web traffic gains, AutoTrader said.

Meanwhile, Edmunds also spotted major traction for Hyundai. There was a 716-percent traffic share jump for the Veloster just after its ad ran, while the Genesis surged 537 percent, and the Elantra jumped 119 percent just after their respective commercials.

Edmunds found that other big winners were the Chevrolet Sonic, with its traffic share gains hitting a crest of 346 percent, and the Chevrolet, reaching an apex of 137 percent. Additionally, the Volkswagen Beetle ad with the dog working to get in “chasing” shape also fared well, as its climbed as high as 367 percent.  Acura showed a 110-percent spike just after its ad.