There’s slow — and then there’s M14A bus kind of slooooow.

The frustrating M14A, which clocked in at an average speed of 4.2 mph — makes even a Florida sea cow seem zippy, according to data from the Straphangers Campaign.

“This is extremely slow. We found that it’s slower than a manatee that moves at 5 miles an hour, so a manatee could beat it in a race,” said Straphangers director Jaqi Cohen.

The sluggish M14A, which rolls across Manhattan’s 14th Street, won the transportation group’s annual tongue-in-cheek “Pokey” award for the slowest bus Tuesday.

The so-called “Schleppie” award for least reliable bus — based on how many times the buses on the route “bunch” or arrive two or three at a time, meaning they’re not on schedule — went to the B15 bus. Roughly 25 percent of the buses, which follow a route from Bed-Stuy to JFK Airport, “bunched,” Cohen said.

“For someone that needs to go to the airport… that’s really frustrating to not know when your bus is going to get you there,” she said. “We need better bus lanes and we need more of them.”

The transportation group for the first time ever also announced a “Lifetime Depreciation Award,” for a slow-moving bus with service so bad, many riders have stopped taking it. That “honor” went to the widely used M42 bus on 42nd Street in Manhattan.

The awards were based on analysis from the Straphangers Campaign and TransitCenter.