How long it takes Mars to complete one full orbit of the Sun

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Mars orbit is larger than Eath's orbit, so it is a superior planet.
Mathematical relation for superior planet's sidereal period and synodic period is
Relating Synodic and Sidereal Periods
where: P: Superior planet's sidereal period
E: Earth's sidereal period = 1 year
S: Superior planet's synodic period
mars sidereal period
mars sidereal period
P = 1.881
P = 1.9 years
It takes 1.9 years for Mars to complete one full orbit of the Sun.