Production of the Bf 109G-2 commenced simultaneously with the G-1 at the Erla and Messerschmitt Regensburg facilities, later expanding to the Wiener Neustädter Flugzeugwerke, which continued building the G-2 until February 1943. Approximately 1,586 G-2 models were produced. Like its predecessor, the G-2 was equipped with the improved DB 605A engine, delivering 1,475 horsepower. A key distinction from the G-1 was the omission of pressurization equipment. The G-2 reintroduced the angled head armor behind the pilot, secured to the cockpit canopy, and featured reinforced armored glass in front of the pilot.
The G-2 could be outfitted with various accessory kits, including bomb racks, drop tanks, and underwing gun pods. A tropical variant, the G-2/trop, was designed for operations in North Africa and the Mediterranean. It featured a sand filter for the engine, reinforced tires, and a survival kit containing essential supplies. To shield pilots from the intense desert sun, small brackets were attached to the fuselage to support a sun umbrella.