Though not the big TV and movie star that its 1960s, '70s, and '80s predecessors were, the 1991 Pontiac Firebird was still sharp, aggressive, and mean.  It was a fun street racer that was also generally affordable and respectable at the gas pump for a sports car.  The biggest change in 1991 is the reappearance of a factory-produced convertible.  Since 1969, a convertible option was only available as a dealer-installed T-top.  Now it was a model in its own right, with the 3.1, 140-hp V6 engine.  
The 1991 Firebird saw a few cosmetic exterior changes to some of its trims.  All got a redesigned front and rear fascia and smaller headlights.  The Formula and Trans Am trims received a new spoiler, and the Trans Am and GTA got new taillights.  The rear-wheel drive 1991 Firebird also got some engine boosts.  The base model still sported a 3.1 V6 rated at 140-hp, but the V8s each got a 5-hp increase.  That meant the L03 5.0 V8 was now 175-hp, the LB9 was 205, and the 5.7 V8 hit 240-hp.  The Trans Am got new ground effects and bigger 16-inch wheels, while the base model featured a Sport Appearance Package that decked it out in GTA costume, including its ground effects.  
Firebirds are all about racing-inspired performance, and there are few other reasons why drivers buy them.  Most 1991 Firebird drivers are happy with its speed, cornering, sporty handling, and engine power, though they wouldn't mind a bit more boost behind the wheel.  They find the interior to be well-laid out, and the style has plenty of attitude without a hefty pricetag.  Drawbacks include a tiny backseat that's hard to get out of, low ground clearance, uncomfortable seating for long rides, and noticeable rattlings.  Drivers say the 1991 Firebird does not feel safe on wet or snowy roads, and the paint quality is substandard.