The 2015 Mustang has shot up the sales charts faster than even Ford seems to have expected, with overseas buyers facing year-long waiting lists for delivery of their new sports cars. In Germany, the Mustang even managed to become the best-selling sports car this March, owing to its attractive pricing and competitive performance. But it’s here in the U.S. that the new Mustang is really lighting up the competition.

For the 18th month in a row, the Ford Mustang beat out the Chevy Camaro and Dodge Challenger in sales, as well as every other two-door sports car on the American market. 12,726 Mustangs found new homes in April, according to Torque News which is down slightly from April 2015 but was still well ahead of its next-closest rival.

So far through 2016, Ford has sold 42,862 Mustang fastbacks and convertibles in America, which is just a few units short of the 42,995 Mustangs Ford sold through the first four months of 2015. Mustang April 2016 sales are only about 1,000 units shy of the combined sales of both the Mustang’s domestic rivals.  It’s clear that this new pony car has some serious staying power, ending a half-decade of Camaro sales dominance over last generation’s pony.

Speaking of the Camaro, sales of the all-new 2016 model have increased slightly to 7,457 units, which is about on par with average sales of the previous generation Camaro. It seems as though GM’s decision to change everything about the 2016 Camaro, except for the way it looks, is hindering sales. Meanwhile, the all-new look for the 2015 Mustang has clearly struck a chord with buyers.

Then there’s the Dodge Challenger, which continues to prove that a good design can keep a car alive even in the face of fresh competition. 6,412 Challengers were sold last month, despite it being the oldest and heaviest of the trio.

Meanwhile, the Mustang looks like it’ll remain on top for the rest of the year, and could continue to dominate the Camaro until GM gives it a more distinctive redesign. It’s almost as if we’ve returned to the sales trend of the late 1990s and early 2000s with the Mustang being America’s favorite pony car. Don’t get us wrong, competition is good for everyone, and we like the current muscle car wars. We’re just glad Mustang is the car that’s dominating the sales charts.