Crew: one pilot
Capacity: one passenger
Length: 21 ft 6 in (6.6 m)
Wingspan: 33 ft 4 in (10.25 m)
Height: 6 ft 3 in (1.92 m)
Wing area: 159.3 ft² (15.1 m²)
Airfoil: NACA 2412
Empty weight: 770 lbs (Cessna 120) 890 lbs (Cessna 140) (349 kg (Cessna 120) 403 kg (Cessna 140))
Loaded weight: 1,450 lb (658 kg)
Useful load: 680 lbs (Cessna 120) 560 lbs (Cessna 140) (309 lbs (Cessna 120) 255 lbs (Cessna 140))
Max takeoff weight: 1,450 lb (658 kg)
Powerplant: 1× Continental C85-12 , 85 hp (63 kW)
Usable Fuel: 22 gals (2x 12.5 gal tanks)
Performance
Never exceed speed: 122 knots (140 mph)
Maximum speed: 109 knots (125 mph 203 km/h)
Cruise speed: 94 knots at 75% power (108 mph, 174 km/h at 75% power)
Stall speed: 39 knots (45 mph, 72 km/h)
Range: 395 nm at 55% power (455 mi, 732 km)
Service ceiling 15,500 ft (4,700 m)
Rate of climb: 680 ft/min (209 m/min)
Wing loading: 8.68 lb/ft² (42.4 kg/m²)
Takeoff ground roll: 500 ft (154 m)
Landing ground roll: 230 ft (70 m)
Endurance: 3.8hrs at 65% power (with 1hr reserve)
Fuel consumption: 4.2 to 4.8 gph (55% to 75% power)