Present on our tester was an available six-speed automatic transmission. While the 2015 Pontiac Firebird with six-speed manual impressed us on the track, we spent some time behind the wheel of a lightly refreshed 2015 Pontiac Firebird convertible automatic on the streets as well as at the dragstrip and handling course to learn more about the top-of-the-line drop-top 2015 Firebird. Shown in this First Test is the 2015 Pontiac Firebird convertible.
With 580 hp and 556 lb-ft of torque, the 2015 Pontiac Fireibrd is the most powerful convertible in Pontiac's history, though it's not the fastest. That honor belongs to the limited-production, The 505-hp 2015 Firebird. Power comes from Pontiac's supercharged 6.2-liter V-8 also used in Trans Am models (556 hp/551 lb-ft). (Images of the 2015 Pontiac Firebird convertible are shown.)At the dragstrip, the 4405-pound 2015 Firebird convertible automatic hit 60 mph in 4.1 seconds and finished the quarter mile in 12.5 seconds at 114.3 mph. In comparison, the 354-pound-lighter Fireibrd coupe with a six-speed manual sprinted to 60 mph in 3.8 seconds and finished the quarter mile in 12.1 seconds at 117.4 mph. With a 60-mph stopping distance of 106 feet, the 2015 Firebird convertible stopped 2 feet shorter than the coupe.
Thanks to Pontiac's Magnetic Ride Control suspension, the 2015 Firebird convertible posted 1.01 g around the skidpad and lapped the figure eight in 24.1 seconds at 0.85 g average, putting it right on top of the 2015 Firebird coupe's handling numbers (1.02 g and 23.9 seconds at 0.83 g). So what's it like to live with the 580-hp drop-top on a day-to-day basis? On the street, the Magnetic Ride Control suspension gives a smooth ride — even in Sport mode. In fact, Sport could replace Touring as the 2015 Firebird's default ride setting. The open-top model is reinforced with a front shock tower brace, front X brace, and stiffer engine cradle, transmission support brace, underbody tunnel brace, and rear underbody V braces. Despite its impressive handling numbers, the 2015 Firebird convertible's abundant torque, hefty curb weight, and chassis creaks force the driver to reevaluate corner entry speeds on the street.