The 2025 GB4 Championship was the dawn of a new era for the series, with the arrival of the Tatuus MSV GB4-025 car resulting in a huge increase of entries, a supremely closely-matched grid, and a title battle that featured three drivers still in contention heading into the final race.
We've done our usual end of year number crunching to analyse the season, and created a series of 'supertimes' (see description below) to establish the quickest six drivers of the season. So let's reveal this year's speedy six!
6. Leandro Juncos, Hillspeed
A hugely impressive season from the Argentine driver, who only joined GB4 with a few days to go until the season started. With minimal testing compared to his rivals, he was on the pace almost immediately, and could have led the standings after the first event. Was in and around the top-five at almost every venue, with Snetterton being his quickest event, where he was third overall on raw pace. He took three podiums before ending his season in style with an excellent victory at Donington Park. A talent to keep an eye on in the future!
5. Luke Hilton, Douglas Motorsport
Perhaps a surprise entry in the speedy six, but the young Brit in his first season of single-seaters was capable of searing pace. He was the third quickest driver at Silverstone early in the season, and when he made a series return at Brands Hatch towards the end of the campaign, was second fastest overall across the weekend's lap times. While he only scored a single podium for the year at Snetterton, he showed there's massive potential here, and should he return for a second season, as he builds more experience, should be in the title fight.
4. Dan Guinchard, Hillspeed
Like teammate Juncos, entered GB4 with only a couple of days testing before the start of the season, but he left the first event as the championship leader, and kept hold of it pretty much all the way to the final day of the campaign. Hugely dependable and fast everywhere he went, Guinchard was the outright quickest driver at Oulton Park as he stormed to pole position, and third fastest overall at the Donington opener, despite that lack of track time in the build-up. This was the year Guinchard truly showed what he was capable of in single-seaters, and deserves to step up to the next level in 2026.
3. Alex Kattoulas, Elite Motorsport
A case of what could have been? The Japanese-Greek driver was inside the top-two on raw pace in each of the first three events of the year, and was the driver to beat at Silverstone during round two. That came despite having barely raced for several years! The second half of the season was more challenging as his title bid fell away, but he again showed what he was capable of during the return visit to Silverstone where he was just outside the top-three on raw pace. Kattoulas played a huge part in Elite's run to the team's championship, and could well make the step up next year.
2. Ary Bansal, Elite Motorsport
The eventual champion was a force to be reckoned with at every circuit this year. The young Indian, who has only recently turned 16, was the outright fastest driver at the Donington Park season opener and at Snetterton, where he reignited his title campaign with a double win. He was inside the top-three at Oulton Park and Brands Hatch, and close enough everywhere else to keep well and truly in the mix. His performance was even more impressive considering he'd never raced at British circuits before the start of the year. He heads to the continent for a full-time F4 campaign in Europe next year, and should be right up there at the front once more.
1. Isaac Phelps, Elite Motorsport
Phelps may have narrowly missed out on the title on the final day of the year, but our numbers suggest the British contender was the quickest driver in GB4 this year, but only just! His season average puts him just over 0.1% ahead of Bansal, equivalent to an advantage of a tenth of a second around a theoretical 90 second lap. Isaac ended his year in style as he was the fastest driver at Brands Hatch by a clear margin, and was the driver to beat on pace at Donington Park too. He was second fastest at Silverstone and Snetterton in the first half of the season, and proved his pace once more by stepping up to GB3 for the final round of the year at Monza, and qualifying just 0.6s from pole for the second race. Phelps was the dominant winner of this year's Jack Cavill Pole Position Cup, and has a hugely promising career ahead of him.
The figures:
Juncos
First half average (rounds 1-4): 100.455%
Second half average (rounds 5-7): 100.892%
Season average: 100.642%
Hilton
First half average: 100.519%
Second half average: 100.756% (one event)
Season average: 100.566%
Guinchard
First half average: 100.333
Second half average: 100.612
Season average: 100.426
Kattoulas
First half average: 100.233
Second half average: 100.569
Season average: 100.377
Bansal
First half average: 100.120
Second half average: 100.574
Season average: 100.315
Phelps
First half average: 100.242
Second half average: 100.106
Season average: 100.184
Fastest times at each event
Donington Park: Ary Bansal, 1m27.427s (race one)
Silverstone: Alex Kattoulas, 2m00.337s (qualifying)
Oulton Park: Dan Guinchard, 1m34.806s (qualifying)
Snetterton: Ary Bansal, 1m46.938 (qualifying)
Silverstone: Jack Taylor, 2m01.221s (qualifying)
Brands Hatch GP: Isaac Phelps, 1m23.895s (race two)
Donington Park: Isaac Phelps, 1m28.702s (race two)
Criteria
Only the drivers who completed a significant portion of the season have been included in the calculations; we’ve taken five of the seven rounds as our minimum participation point.
What is a supertime?
From each race event, we’ve taken the fastest individual lap set by each driver and converted that into a percentage of the quickest outright effort from that event. This allows a greater spectrum of data to be analysed, and allows us to create a season-long average. The closer each driver is to 100%, the faster they were across the year as a whole. Around a 90-second lap, (similar to Donington Park and Brands Hatch) one percent is equivalent to just under a second of lap time.
