The 22-second floor: WEC's fastest pit stops, decoded

The fastest race pit stop in WEC history is 22.754 seconds. It belongs to the Ford Chip Ganassi Team UK Ford GT at the 2017 6 Hours of Mexico City. The crew refuelled, did not change tyres, did not change driver, and got the car back into pit lane traffic in less time than it takes Hartley to clear sector one at Imola.

That number has stood for nearly nine years across three sets of regulations, two scrapped classes, the introduction of LMGT3, and the arrival of seven new Hypercar manufacturers. Plenty of stops have come close. None have beaten it. This story is about what makes a sub-23-second stop possible, where in the world they actually happen, and what the floor of 22 seconds tells you about how good the WEC pit-stop crews really are.

The all-time top ten

The data here comes from every parsed pit stop in the 2012 to 2026 archive, filtered to race sessions only. Anything inside 22 to 35 seconds is a flash stop in the technical sense: fuel only or fuel plus a side of tyres, no driver change, no repair work.

Eight of the ten quickest stops happened in Mexico City. The other two were at the Nürburgring. Not a single one is in the Hypercar era, and not a single one is at Le Mans.

Why Mexico City was different

The Autodromo Hermanos Rodriguez sits at 2,240 metres above sea level. Air at that altitude is roughly 21 percent thinner than at sea level. That changes two things that matter for a stop. First, the fuel rig pumps faster: the air-pressure system that drives the WEC's standard rig has less back-pressure to fight, so flow rate climbs by a few percent. Second, the pneumatic wheel guns spin faster on the same compressed-air supply, because the regulator on the team's air tanks holds output pressure constant while the ambient counter-pressure drops. The combined effect is small per individual action, but a flash stop is the sum of a dozen small actions chained together with no slack.

The other thing about Mexico is the pit-lane geometry. The pit boxes are spaced wide and the entry is fast, so cars come in carrying speed and leave with the limiter pulled cleanly. There is no awkward final-corner stack-up like at Spa. None of this would matter on its own. It mattered because Ford Chip Ganassi had drilled the GTE crew to the point where every gain compounded.

The Mexico round ran four times, from 2014 through 2017, before falling off the calendar when WEC reconfigured to the super-season format. The all-time top stop list still belongs to those four races. No track since has produced the same combination of altitude, geometry, and crew discipline.

The modern leader: Shanghai (and then Spa)

After Mexico left, the title of "circuit where the fastest stops happen" passed to Shanghai International Circuit. Shanghai has 122 race stops under 32 seconds in the archive. That is comfortably more than any other venue, even though Shanghai's all-time fastest stop (22.937s, the Toyota TS050 in 2018) is a quarter of a second slower than the Ford GT's Mexico record. The 2018 race in particular was a pit-lane shootout: Toyota, BMW, Porsche, AF Corse, and Corvette all set stops in the 22.937 to 23.211 second range.

Since 2020, when Shanghai's WEC slot disappeared too, the centre of gravity has moved to Europe. Spa-Francorchamps now has 94 sub-32 second race stops, and that count keeps growing.

Spa is interesting because it has produced the entire Hypercar-era top of the table. Manthey 1ST Phorm and TEAM WRT trade fastest-stop honours there year after year, and the gap to the all-time Ford GT record has narrowed to 0.435 seconds.

The Hypercar era floor

If you restrict the data to the current Hypercar / LMGT3 ruleset (events from 2021 onward), the leaderboard looks like this.

Every single one of the ten quickest Hypercar-era stops is at Spa. Five of the ten are LMGT3, three are Hypercar, one is LMGTE Am, one is LMP2. That spread says something specific: when the conditions are right, the class boundaries collapse. A Porsche 911 GT3 R LMGT3 (around 1,300 kg) and a BMW M Hybrid V8 Hypercar (around 1,030 kg) refuel to within a hundredth of a second of each other.

What "23 seconds" actually means

A 23-second stop in WEC is never a driver change. The regulations forbid changing tyres at the same time as refuelling, and a driver change adds 8 to 15 seconds at minimum once you account for the belt swap and the front-windscreen clear. A flash stop in the Manthey or Ford bracket is one of two things:

A pure fuel stop. The car comes in, four members of the crew connect the fuel rig and steady the chassis, fuel flows for around 18 to 20 seconds at the regulated flow rate, the rig disconnects, the front jack drops, and the car leaves. Wheel guns never come off the trolley.

A fuel plus single-side stop. Fuel goes in while one mechanic per axle has the wheel guns ready. The instant the fuel rig signals "stop", the rules allow the wheel-change clock to start. The new tyres are on by the time the front jack drops. This adds about a second over a pure fuel stop and is the more common variant in practice.

The reason the floor sits around 22 seconds and not lower is the regulated fuel flow rate. WEC restrictor specifications cap how fast fuel can move from the rig to the tank. You cannot beat physics. What you can beat is everything around the fuel: the speed of connection, the speed of disconnection, the front jack drop time, the moment the driver releases the brake pedal, the lollipop signal precision. The crews that win this game have stripped every one of those down to the bone.

Why the all-time record may not fall

A new Hypercar 22.754-second stop would need three things at once: a track with thin air, a pit-lane layout that does not force a stack-up, and a crew that operates without a wasted micro-second. Spa has the crews. Spa does not have the altitude. Mexico had everything, but Mexico is not on the WEC calendar and is unlikely to return in this regulation cycle.

There is a fourth factor that has shifted against fast stops since 2017. The current Hypercar rules require slightly more refuelling per stint than the 2016-2017 GTE Pro and LMP2 cars did, because Hypercars run lower power than the old LMP1 era and burn fuel less efficiently per lap. The TS050 in 2017 could do a stint on a ten-second top-up. A 2026 Toyota GR010 needs slightly more dwell time at the rig on a comparable stint. That, more than anything else, is why the floor has crept upward.

The record will probably not break this season. It might not break next season either. The interesting question is whether the floor has actually risen to around 23.0 seconds, in which case Manthey's 23.189s at Spa 2025 is the new ceiling of what is possible, and the Ford GT number from 2017 is going to age into a "Senna at Donington" sort of anomaly: a perfect run of conditions and execution that nobody else gets to attempt.

If your guess for when it falls is "the next time WEC runs at altitude", you have a defensible position. If your guess is "never", that one is defensible too.

What the floor tells you about the championship

Strip out the records and look at the median. The 122 Shanghai sub-32 stops have a median of 25.8 seconds. The 94 Spa stops have a median of 26.9. The full distribution of all 31,714 parsed WEC race pit stops sits with a long tail at the high end (driver changes, repairs, drive-throughs) but a remarkably tight cluster around 32 to 38 seconds for a "normal" full-service stop.

The reason this matters is that pit-stop time is one of the few variables in WEC that an under-funded team can compete on. You cannot out-engineer a Toyota Hypercar with a customer Oreca. You can hire ten crew members and drill them to the point where you give back nothing in the pit lane. The data here is from teams as small as Iron Dames and as large as Toyota Gazoo Racing, and at the floor they are within a hundredth of a second of each other. That is not because they have the same kit. It is because they are all already operating at the physical limit of what the regulations and the fuel rig allow.

So the next time a WEC race comes down to a 0.4-second margin at the flag, look at the pit-stop ledger first. Somewhere in those 24 stops, a crew gained that margin in pieces nobody on the broadcast noticed.