Mercedes has brought a major upgrade package for its 2019 F1 W10 car, which includes a new chassis, a new cooling system and new aerodynamic parts while the 125th anniversary of the Mercedes Motorsport will be celebrated with special new livery.

Ferrari has brought a series of minor improvements to 2019 French GP which will determine the development path for next improvement in Austria, England and Germany to try to reach the unbeatable Mercedes.

New upgrade package from the world champion team is definitely the biggest news on the first day of the second test in Barcelona which includes revised front wing, bargeboards, sidepods and floor for Mercedes F1 W10 - MAXF1.net reviews the most important changes.

Renault has high hopes for their new 2019 F1 car R.S.19 which has to reduce the huge gap behind the top three teams - can Renault justify their factory team status and pull away from the rest of the Formula One midfield?

Toro Rosso new F1 car for 2019 STR14 is the first car in the new hybrid turbo era that will share a large number of parts with Red Bull which will also use Honda power units this year - will it help the team to move up from the ninth place finish in F1 2018?

Mercedes has brought several aerodynamic modifications to its W09 in Russia and among them are the new dual rear wing pillars that follow Ferrari's development direction.

After the introduction of a large upgrade package for Spain, McLaren continued to make minor changes for the next race in Monaco, and the most obvious change is the addition of T-wing in front of the rear wing.

Red Bull has, like the other teams, brought a special version of their rear wing for low downforce requirements, which is in line with last year's version for very fast track in Baku, with a very flat main plane and shallower flap for better top speed.

Ferrari has brought a big upgrade package to the United States, but failed to produce enough parts for both drivers so Vettel and Raikkonen used different diffuser specifications.

For the first time since Honda returned to Formula 1, McLaren brought the low downforce rear wing to Belgium, but it did not help them significantly reduce the huge power deficit from Honda power unit.