Gallery: Valencia Formula E pre-season test in photos

Maserati will make a full-factory return to racing, joining the Formula E grid in 2023 with a view to electrifying its road car portfolio. In that regard it makes sense for Maserati - but it's also a win for the series as it seeks to rebound from losing three of its heavyweight German giants in the space of a few months

As Formula E prepares to enter its new Gen3 era, many have pondered the prospect of its existing machines continuing in a feeder category. But before such a programme could be embarked on, there are several important questions that must be satisfactorily answered.

OPINION: The 2021 Formula E campaign was wide open until the final race after its most unpredictable season yet. Eventual champion Nyck de Vries explains why this made his title-winning experience such a different experience to conquering F2 in 2019

Formula E welcomes a mix of past, present and future for the 2021-22 season. The old guard facing off against a sprinkling of newcomers, a fresh qualifying format amid a sporting rules shake-up and a range of minor tweaks to the existing all-electric machines are all subplots to the final campaign before the next generation arrives

Electing not to share data with its competitive customer team would have been a straightforward means of gaining an edge on at least one of Mercedes' Formula E rivals last season. But by reciprocating the relationship forged under its initial HWA guise, when it was a customer to Venturi, both teams have reaped the rewards

With its ultra-successful sister team in Formula 1 and a support network providing some of the best minds and resources in the business, Mercedes Formula E team principal Ian James knew his squad had all the winning ingredients. But mixing it together was no easy feat and required key attributes to be grown from within

OPINION: Few figures in racing today divide opinion like Dan Ticktum. The Formula 2 race winner now has the chance to wipe his professional slate clean with his move into Formula E, but it won't be easy at the squad which has brought up the rear for the past three years. Here are the three key criteria he must meet to make a lasting impression on the series.

By virtue of its Formula 1 success, Mercedes was expected to rise to power in Formula E before long. That it won both the drivers' and manufacturers' championships this year, after only two seasons as a full works effort, belies a tricky path littered with potential pitfalls