Mercedes Sets Daunting Benchmark on Day 3 of F1 Testing

Mercedes has set down a daunting marker to its Formula 1 rivals with a stunning display of reliability on the third day of pre-season testing at the Circuit de Barcelona-Catalunya.
The Silver Arrows ran for its second day of three permitted across the week in Spain, having skipped Tuesday due to inclement weather. And much like Monday's performance, the new W17 chassis and power unit combo racked up impressive mileage at the hands of both George Russell and Kimi Antonelli.
Huge mileage for Mercedes

Russell logged 92 laps in the morning before Italian teammate Antonelli fell one lap shy of that tally in the afternoon, the 183 laps taking Mercedes to a combined total of 334 laps completed in two days of running, which equates to over 1,500km.
That is a huge amount of data logged during a time when every lap is crucial to developing new machinery at the start of a new technical regulation cycle.
"We are pleased with the mileage we achieved today and have ticked off most of the objectives we set ourselves for the first two days of running here in Barcelona," said trackside engineering director Andrew Shovlin.
"The car has been reliable, and we've been able to put together multiple race distances today. That is encouraging as an initial step, and I know both drivers will be feeling the number of laps they put in today!
GR in the hot seat 😮💨 pic.twitter.com/FXcaclgrB6
— Mercedes-AMG PETRONAS F1 Team (@MercedesAMGF1) January 28, 2026
"The drivers have commented favorably on the feeling these smaller, lighter cars give them compared to the previous generation. However, they will only be truly happy once we see the relative performance compared to our competitors and that is something we won't see until Bahrain at the earliest.
"We have one more day of running where we will get into a little bit more set-up work than we have so far. That may come tomorrow and will give us more useful information we can analyse before we head to Bahrain. If that final day goes as well as these first two days have then we will be happy with how this shakedown in Barcelona has gone."
Teams will get a further two weeks of testing at the Bahrain International Circuit in February before heading to Melbourne's Albert Park Circuit for the season-opening Australian Grand Prix.
While performance is hard to gauge at this early stage, Mercedes' reliability has underscored its position as the pre-season favorite.
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Ewan is a motorsport journalist covering F1 for Grand Prix On SI. Having been educated at Silverstone, the home of the British Grand Prix, and subsequently graduating from university with a sports journalism degree, Ewan made a move into F1 in 2021. Ewan joins after a stint with Autosport as an editor, having written for a number of outlets including RacingNews365 and GPFans, during which time he has covered grand prix and car launches as an accredited member of the media.
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