Haas has unveiled its VF-17 on Sunday ahead of the opening day of pre-season testing at the Circuit de Barcelona-Catalunya, which starts on Monday, lasting four days.
Haas joined Formula 1 last season and finished eighth in the standings, with Romain Grosjean scoring all of its 29 points.
Grosjean has been retained for another year, while Haas has signed Kevin Magnussen from Renault to replace Esteban Gutiérrez.
Magnussen is set to begin Haas’ testing schedule at the Spanish Grand Prix venue on Monday.
The VF-17 ran for the first time on Saturday during a filming day at the circuit.
Speaking about the car, team principal Guenther Steiner said: “I think the pedal box is the same, but all the rest is very different from last year’s car.
"You always try to make a faster car, which is normally a lighter car. Now we can put on more ballast and get better weight distribution. The aero is completely new, as are the tires, so we needed to have some built-in adjustability.
“Aesthetically, the car has a more aggressive look. It’s lighter and more aerodynamically efficient. Everything we learned from our first car has been applied to our new car.”