As we draw closer to the summer months — prime time for a road trip with the top down — sports cars continue to be in high demand and low supply.

That’s according to Autotrader’s February installation of late-model used and CPO scarcity reports.

For example, the CPO Porsche Cayman was the No. 1 scarcest certified vehicle in the country in February, while for the late-model used market, the Nissan GT-R tops the list.

The BMW M3 (No. 5) and the Audi A8 (No. 6), also graced the list of scarcest certified vehicles nationally.

On the late-model used side, the Porsche Boxster came in at No. 5; the BMW 2 Series at No. 6; the BMW M3 at No. 8, and the Audi TT at No. 10.

In terms of why sports cars remain scarce, Michelle Krebs, senior analyst at AutoTrader.com said we have to look a few years back.

“That’s due in part to the fact that sports car sales were the first to fall during the recession and the last to emerge. Little leasing was available to finance sporty cars, so the used pool was small,” Krebs explained.

That said, as the economy continues to recover, buyers began to return to the sports car market — but supply isn’t up to meeting such demand.

“As the economy began to recover and buyers had more discretionary income for purely fun purchases, sports car sales — new and used — began to rise,” said Krebs. “Demand for used ones grew, but with little supply to quench the appetite for those buyers.”

The CPO Porsche Cayman was also scarce in specific designated market areas, such as Los Angeles and New York, where it remains the hardest-to-find certified vehicle.

The certified unit also came in at No. 2 in Atlanta, and the CPO Porsche Boxster is at No. 4.

“With the economy continuing to improve and spring arriving after a particularly brutal winter, scarcity of used sporty cars will likely continue through the summer months, as it did last year,” Krebs concluded.

See below for the full listing of February’s scarcest vehicles from AutoTrader.com: