Throughout 2014, the website CarMD kept track of over 90,000 car repairs within the U.S., concluding that for the fourth straight year hybrid car repair costs were lower than the last.

CarMD states that the reasoning behind this is largely due in part to the increase of supply of hybrid car parts, which is on account of how much more common hybrid cars are becoming throughout the United States.

As a result of both these factors there are now more mechanics trained to repair and maintain hybrid cars, thus helping to lower repair costs.

For example, from 2013 to 2014 the cost to replace an inverter on a hybrid car fell more than 50 percent, from $2,800 to $1,350 in that time period alone according to CarMD.

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Within 2014 there was only one maintenance item that increased for hybrid cars and that was the battery, the costs of replacing one increased 11 percent from $3,140 to $3,479.

In comparison, the cost of conventional petrol fueled cars remained the same throughout the course of the year, with labor costs slightly up, and parts costs down by nearly the same amount. Replacing a malfunctioning oxygen sensor on a gasoline powered vehicle for instance was an average cost of $259, while quite the heftier repair price-wise of a catalytic converter usually cost around $1,200.

CarMD stated that the more hybrids we see on the roads, the more common the technology used within them will become, therefor the costs of repairs should continue on its downward trajectory.