First the Specifications:
(all info provide by the Haynes Manual for the Millennium Falcon)
Length: 28m
Maximum speed (atmosphere): 740kph
Hyperdrive: Class 3
Hyperdrive backup: Class 16
Armament: 1 standard laser cannon
Crew: 2
Passengers: 4
Cargo: 75 metric tons
Cost: 85,000 (20,000 used)
For comparison here are the same Specifications for the YT-1300 (Millennium Falcon)
Length: 34.75m
Maximum speed (atmosphere): 800kph
Hyperdrive: Class 2
Hyperdrive backup: Class 12
Armament: 1 standard laser cannon
Crew: 2
Passengers:9-15
Cargo: 25-100 metric tons
Cost: 100,000 (25,000 used)
These are of course factory specifications.
Han Solo later upgraded his YT-1300 to a Class 0.5 Hyperdrive, making it one of the fastest ships in the Galaxy, and illegal.
The basic YT-1000 had fewer interior modular options than later models, but had a cargo capacity of up to 75 metric tons. The cockpit was placed in the center of the ships upper hull. It had large transparisteel windows which were retrofitted from earlier Barloz-class freighters.
The YT-1000 was well received by customers, but CEC decided to have a limited run of the YT-1000 in favor of building larger ships.
The YT-1000 was replaced by the YT-1200 and the YT-1210, which introduced the side mounted cockpit.