Chaz Mostert to race for Vasser Sullivan Lexus in Detroit
Australian Supercars reigning champion will join Aaron Telitz in the #15 Vasser Sullivan Lexus at Detroit for the 100-minute IMSA sprint round.
IMSA Sportscar Championship
The IMSA Sportscar Championship, sponsored by WeatherTech, is North America's premier sportscar series. Featuring races across the United States and Canada, at iconic tracks such as Daytona, Sebring, Watkins Glen and Laguna Seca, plus manufacturers including Cadillac, Acura, Lexus, Corvette and Ford, in both prototype GTP and GTD classes, it has spectacular, close racing from some of the best drivers in the sport.
Daytona analysis: Examining Porsche's slender pace advantage
Porsche controlled this year's Daytona 24 Hours, but look deeper and it was a lot closer than it seemed, Only Endurance analysis finds.
GALLERY: Our top shots from Daytona
Daytona, or should we say Fogtona, has been and gone, but if you're longing for a return to the high banks, we've got you covered.
Cadillac evo update brings consistency over a stint, say drivers
Cadillac’s 2026 evo update targets stint consistency, drivability and reliability in IMSA GTP and WEC Hypercar, say drivers.
Analysis: Daytona long runs set stage for close 24 hour sprint
The Daytona long run pace during practice saw 4 manufacturers in the hunt for the win of the United States' biggest endurance race.
Cadillac WTR: 'Positive' Roar, team is 'ready to race'
After finishing in the top 5 in every session at the Daytona Roar test, the Wayne Taylor Racing Cadillac team are ready for the 24 hour race.
Daytona 24 preview: Porsche hunts for third straight victory
Porsche have a target on their backs as Cadillac, Acura, BMW and Aston Martin aim to stop Porsche's winning streak at Daytona.
GALLERY: BMW's new IMSA livery as WRT makes US debut
BMW shows off new livery as WRT prepares to make IMSA debut as the German manufacturer's new factory partner team.
Porsche factory talent headlines Manthey IMSA squads
Reining WEC LMGT3 champions, DTM stars and Le Mans-winners land seats in highly anticipated entries
Estre and Vanthoor spearhead revised Porsche IMSA GTP squad
The WEC Hypercar champion pairing will tackle the full 2026 IMSA season alongside Porsche's rising GTP stars in the #7 car.
Compared: New 2026 cars break cover at IMSA's Daytona test
We compare the 2025 models of four cars with the new 2026 versions from IMSA's Daytona test over the weekend.
RLL announce McLaren GTD PRO effort
The former BMW factory team will return to IMSA's GT ranks in 2026
Mathieu Jaminet: 'one of the hardest decisions of my life' to leave Porsche
Porsche star and factory driver Mathieu Jaminet will leave the German manufacturer for pastures new at the end of the WEC season next weekend.
Petit Le Mans analysis: Examining the final hour strategies
It all came down to the final pitstops and the fuel strategy at this year's Petit Le Mans. We take a deep dive into how it played out.
Petit Le Mans race weekend gallery: Part 1
The picturesque Road Atlanta, host of Petit Le Mans, offers up some great opportunities for race car photography. Check out our IMSA gallery.
Proton issues 'no comment' on IMSA GTP 2026 absence
Amid Porsche's WEC Hypercar withdrawal, Proton are absent on the initial 2026 IMSA GTP entry list.
Petit Le Mans: IMSA titles to be decided at Road Atlanta
There are over 20 titles, awards, and championships to be decided at this year's Petit Le Mans. We examine some key race storylines.
Grello in IMSA 2026: Manthey to contest IMSA Endurance Cup
Grello? In IMSA? Have our dreams come true?
Porsche terminate factory WEC Hypercar programme
Porsche have confirmed their exit from Hypercar, but reaffirm commitment to IMSA GTP class with Porsche Penske Motorsport
IMSA championship drama heats up at Indianapolis
The 6 hour race at Indy could set up a thrilling championship finale at Petit Le Mans.
Laurin Heinrich: Staying with AO Racing 'huge' for career
AO Racing's young star Laurin Heinrich talks to Only Endurance about his own personal growth, loyalty to AO Racing, and the IMSA title chase.
BMW M Team RLL's Road America 1-2 is too little, too late
BMW and RLL took their first IMSA win of 2025 at Road America. But with the partnership between the two ending soon, it's too little, too late.
Analysis: Lamborghini to 'pause' SC63 LMDh programme for 2026
Lamborghini's beleaguered SC63 LMDh prototype programme will be offically paused for 2026, with the company focusing on its new GT3 car instead.
IMSA returns to Road America for final sprint race
Mosport delivered chaos and breakthroughs in IMSA thriller
First-time IMSA victories in all three classes for IMSA, some after early setbacks, at Mosport. OE explores how they did it.
6 things to follow as LMP2 headlines IMSA at Mosport
With no GTPs at IMSA's only Canadian race this weekend, the LMP2s will headline the Sportscar Championship.
Watkins Glen chaos reshuffles IMSA championship leaders
A chaotic race with monsoon-like rain, 10 cautions, and a fuel-save thriller to the finish meant the championship order
Six Hours of the Glen preview: LMP2 returns to IMSA
With 56 cars from four classes, it'll be a busy race at Watkins Glen. What can we expect from third IMSA endurance race of the year?
How Acura MSR toppled Porsche Penske’s reign in Motor City
Going into Detroit, Porsche had taken four straight victories in IMSA. But, Acura managed to break the streak and win for the first time in 2025.
'Got to get back to the front': WTR's 2025 not meeting expectations
Wayne Taylor's frustrations about 2025 so far are evident, but things might be looking up.
Could Wayne Taylor's idea of racing in WEC actually work?
A surprise admission by Wayne Taylor raises more questions than answers about whether we could see a WTR Cadillac in WEC next year.
IMSA: Winners and losers from Laguna Seca
With Porsche claiming their fourth win on the trot, who won and lost at the most recent round of the IMSA Sportscar Championship?
IMSA: Vanthoor masterclass at Laguna Seca puts pressure on Porsche
It was another Porsche 1-2 at Laguna Seca, but Dries Vanthoor put huge pressure on Nick Tandy, with a final corner clash ending in Tandy's favour.
Will Wayne Taylor Racing's quali pace at Laguna Seca hold up on race day?
With three wins on the bounce for Porsche in IMSA, Wayne Taylor Racing is keen to step up and taste the victory champagne again.
IMSA Laguna Seca: 5 things to look out for
IMSa Laguna Seca is fast approaching. Can BMW finally take an IMSA victory in 2025? Will anyone beat AO Racing in GTD?
'Love being back at Ford': Seb Priaulx on Blue Oval return
After a few years away, Seb Priaulx is back with Ford and ready to fight for the IMSA championship.
'Constant state of trying to improve': Rahal on BMW and RLL's 2025
BMW and RLL are determined to turn frustration from recent IMSA races into success, hoping to convert pace into a long overdue victory at Laguna Seca
IMSA Long Beach: Just how much quicker were Porsche?
Felipe Nasr on chances of winning endurance triple crown
Porsche's Brazilian star on the chances of completing an iconic motorsport accomplishment later this year.
Jordan Taylor: 'So many unknowns' at Le Mans for WTR
Wayne Taylor Racing will fulfil a long-held ambition in 2025: racing at Le Mans. But it's a big undertaking for the team, as J. Taylor explains.
Action Express: 'Unfortunate circumstances' ended Sebring win chances
Action Express's race strategist tells Only Endurance how an unscheduled pitstop meant the team couldn't challenge for the win in the final hour.
GALLERY: The 2025 Sebring 12 Hours
Exclusive imagery from the second round of the IMSA season.
SEBRING: Did Cadillac let the win slip through their fingers?
Porsche won at Sebring, but Cadillac could have won if it weren't for a strategy error.
OE PREDICTS: 12 Hours of Sebring
The battle on the bumps, Tim and Phil predict how the second IMSA race of the year will play out...
SEBRING: BMW on pole but Porsche top long runs
Dries Vanthoor took his second IMSA pole on the trot, but Porsche hold the cards for the race at Sebring.
Deletraz: Cadillac 'gives you confidence' on brakes
While both LMDh-rules cars, the Cadillac and Acura have some notable differences when behind the wheel, say Louis Deletraz and Jordan Taylor.
GALLERY: New Sebring liveries for BMW, Corvette, Acura
Some teams are bringing new liveries to Florida's day-to-night endurance race.
SEBRING BOP: Analysing weight and power for the 12 hour race
Have Cadillac been shafted? How will Aston Martin fare at their first Sebring? We examine the BoP figures, using power to weight ratios.
Gunn: Sebring and Qatar 'completely different' for Valkyrie
Aston Martin now have race experience under their belts with the new Valkyrie. But will that help for the upcoming race at Sebring?
WATCH: Valkyrie Hypercar unsilenced at Sebring
The first footage of the Cosworth V12 let loose during IMSA Testing at Sebring
Drugovich not in Valkyrie due to no 'close link' between F1 and WEC teams
Aston Martin's F1 reserve driver is an F2 champion, so he's handy behind the wheel. But why isn't he driving the Valkyrie in WEC or IMSA?
The verdict on Aston Martin's Valkyrie squad, driver-by-driver
OE's Tim and Phil deliver their verdicts on the Valkyrie driver roster
'No reason' hybrid omission will impact Valkyrie: Aston Martin's Adam Carter
Aston's new Valkyrie LMH features a 6.5L V12 — but no hybrid unit. Aston's head of endurance doesn't believe this will have an impact, though.
Aston Martin unveils Valkyrie liveries and driver lineups for WEC and IMSA
The much-anticipated project will make its competition debut at the season-opening WEC race, the 1812km Qatar.
ANALYSIS: How Porsche took victory at Daytona 24 2025, part 2
Porsche consolidated their 1-2 at the half way mark and turn it into victory at Daytona, but they also missed out on taking their first 1-2 at the race since 1987.
'Ready to bring them on board': IMSA's Doonan on Alpine
McLaren and Ford are expected to confirm their future involvement in top class sportscars imminently. Genesis are coming. Could Alpine come to IMSA too?
ANALYSIS: How Porsche took victory at Daytona 24 2025, part 1
Porsche went from not looking quite on the pace before Daytona, to winning and almost taking a 1-2. How?
GALLERY: Daytona 24 race images
Enjoy these images from the 2025 edition of the 24 Hours of Daytona, courtsey of Rolex.
Possible puncture for #31 Cadillac causes crash, Vesti 'feeling all okay'
#93 MSR Acura in garage at Daytona with rear left suspension failure
PRACTICE ANALYSIS: Acura, BMW still strong, Cadillac moving up
While BMW and Acura look strong and Cadillac aren't far behind, as usual the 2025 edition of the Daytona 24 Hours will be anyone's game.
INSIGHT: How the current top class sportscars differ
TRL spoke to multiple drivers taking part in the 2025 Daytona 24 Hours to find out how the various Hypercars and GTPs differ, and what's the same.
BMW and Acura on top in long run averages at Daytona Roar
Examining the long runs from the six Roar before the 24 sessions, preceding the 2025 edition of the Daytona 24 Hours.
Iron Dames x Porsche: a ‘new chapter’ for female racing drivers
The Iron Dames project will take a step up in 2025, joining forces with Porsche.
Examining the IMSA and WEC 2025 entry lists, part 2: LMGT3/GTD and LMP2
Part 2 of our 2025 entry list examination, this time looking at the GT classes in IMSA and WEC, plus LMP2 in IMSA.
Examining the IMSA and WEC 2025 entry lists, part 1: GTP and Hypercar
Taking a look at the storylines in the IMSA and WEC 2025 entry lists.
How Cadillac conquered a 2-lap deficit to win Petit Le Mans
Cadillac on top in practice long-run pace averages at Petit Le Mans
Trying to piece together a picture of what this year's Petit Le Mans could look like, using practice pace.
Early thoughts on Hyundai's forthcoming LMDh programme
Some early musing on Hyundai's entrance into endurance racing with an LMDh car.
