The Haas VF-19 was formally launched on February 18, 2019, at the Circuit de Barcelona-Catalunya, following an earlier livery reveal at the Royal Automobile Club in London. Development of the car began in July 2018, when Haas shifted focus away from its predecessor, the VF-18, to accommodate 2019 aerodynamic regulation changes. These regulations mandated a wider, simplified front wing, a wider rear wing, simplified brake ducts, and smaller bargeboards to facilitate better overtaking.
In accordance with Haas's established technical model, the team designed and manufactured the monocoque, bodywork, and crash structures in-house to satisfy FIA constructor requirements. Other components were purchased from power unit supplier Ferrari, while Dallara provided assistance with chassis construction and wind tunnel testing.
The VF-19 demonstrated high pace during pre-season testing, appearing to be the fastest of the midfield competitors despite some reliability issues. At the season-opening Australian Grand Prix, Kevin Magnussen finished 6th after starting 7th. Romain Grosjean was forced to retire from the same race due to a wheel nut failure following a pitstop.
Performance declined at the Bahrain Grand Prix. Although both cars qualified in the top 10, Magnussen fell to 13th in the race, citing a lack of straight-line speed. Steiner noted that the car struggled to reach optimal tyre temperatures. This issue persisted in China, where both drivers finished outside the points. Steiner later explained that the car performed better on tracks with high-speed corners and short straights, such as Melbourne, which helped generate tyre heat more effectively than the layouts in Bahrain and Shanghai.
At the Azerbaijan Grand Prix, the team failed to reach Q3 for the first time in 2019. Magnussen finished 13th, while Grosjean retired with a brake issue.
Haas introduced a major update package at the Spanish Grand Prix. To evaluate the new parts, the team initially fitted them only to Grosjean’s car during Friday practice. The updates proved successful in qualifying, with Grosjean and Magnussen securing 7th and 8th on the grid, respectively. They went on to finish 10th and 7th, with Grosjean scoring his first point of the season in 10th, marking the team's first double-points finish of the year, though the race was noted for two mid-race collisions between the teammates.
Despite further upgrades at the Canadian Grand Prix, the VF-19 continued to suffer from inconsistent race pace. In Austria, Magnussen qualified 5th but finished 19th, falling behind the Williams of George Russell. By the British Grand Prix, the team reverted Grosjean’s car to the original Melbourne specification to diagnose the failure of subsequent upgrades. However, a collision between the two drivers on the opening lap resulted in a double retirement, preventing a direct comparison of the two specifications.
Steiner stated that even by the mid-point of the championship, the team struggled to understand the car's behavior. The difficulties in operating the 2019 Pirelli tyres and the resulting inconsistent performance influenced the design choices for the team's 2020 successor.
Before the Belgian Grand Prix, Haas ended the split-specification trials, moving both drivers to a revised version of the package used in Germany and Hungary. However, at the Singapore Grand Prix, a data mismatch during practice led the team to revert Grosjean to a hybrid "Melbourne" specification, utilizing the floor, bargeboards, and rear wing from the season opener paired with the current front wing.
The VF-19 originally featured a black and gold livery associated with title sponsor Rich Energy. This sponsorship was terminated at the Italian Grand Prix. Consequently, the Rich Energy logos were removed from the car's livery starting from the Singapore Grand Prix.
The VF-19's competitive record was defined by its qualifying strength contrasted against its inability to maintain tyre temperatures during races. While the car frequently appeared in Q3, its race results were often hampered by the narrow window of tyre performance. Testing duties for the VF-19 were supported by Pietro Fittipaldi alongside the primary race drivers.
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