With demand for the 2015 Dodge Charger SRT Hellcat and 2015 Dodge Challenger SRT Hellcat exceeding the automaker's expectations, Fiat Chrysler Automobiles (FCA) is suspending orders for the 707-hp muscle cars until the company can catch up on existing orders, Automotive News reports.

FCA initially expected to sell around 5000 SRT Hellcat models per year. So far, the company has received orders for more than 9000 cars. The order suspension is expected to lift in August, or possibly sooner if production increases or if current orders are cancelled, according to Allpar.com.

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"Due to unprecedented demand for the 2015 Dodge Charger and Challenger SRT Hellcats, we are temporarily restricting orders while we validate current orders that are in the system," a company spokesperson told Motor Trend in an email.

So far, more than 2200 Dodge SRT Hellcat models have been delivered since orders opened in September. Like other special-edition cars, many of the SRT Hellcat models have sold well above MSRP. A few Dodge dealers were criticized by Gualberto Ranieri, of FCA, for taking orders that may go unfilled. Some dealers have even charged nonrefundable deposits as high as $5000.