Chevrolet have been hit by multiple penalties which have sent them into reverse gear as far as the manufacturers championship is concerned.

Despite amassing 128 points in total at the season opener on the streets of St Petersburg in Florida in the first round of the 2015 Verizon IndyCar Series championship last weekend, the engine provider has lost all that and more after it was revealed that they had been forced to make unscheduled repairs on 11 of the 12 power units in use for the season opener.

"We discovered an issue in durability testing after these race engines were built, and decided to make repairs as a precaution," explained Chris Berube, Chevrolet's program manager for their IndyCar activity. Chevrolet later added that potentially faulty valve springs due to a process change at one of their suppliers had been the cause of the concern.

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Under IndyCar rules, 20 manufacturers points are deducted for each a non-minor engine repair that requires a component change, subject to IndyCar approval. That means that Chevrolet has been docked 220 points, leaving them heavily in negative territory just one race into the 16-race season.

Engine manufacturers, drivers and entrants receive championship points corresponding to their finish in a race, with points in the manufacturers' battle limited to each of the engine providers' top three race finishers). The manufacturer leading the most laps also gets two additional points while the pole-winning driver secures another extra point.

At St Petersburg, Juan Pablo Montoya earned 50 points for the race win followed by his Penske team mate Will Power who netted a further 40 points for Chevy, and by Ganassi's Tony Kanaan who contributed 35 points to the marque's tally with his third place. Power earned Chevrolet a further bonus point for winning pole, and Chevrolet-powered drivers led 105 of the 110 laps to ensure that the manufacturer also picked up the final two available bonus points in what had been a display of utter domination by the bow tie brigade at St Pete.

Ryan Hunter-Reay was the highest finisher among Honda drivers in seventh place meaning that he picked up 26 points for the Japanese manufacturer, which in total ended the day with 70 points. However, following the penalties handed out this week Chevrolet now drops to -92 points, handing Honda an early 162 point advantage in the manufacturers' championship heading into the Indy Grand Prix of Louisiana on April 12.