Key Highlights
- The Sepang International Circuit will host its first Formula 1 Grand Prix since 2017 after Malaysia stepped in to replace Bahrain’s original April slot.
- Sepang’s 5.543-kilometre layout features fast corners, heavy braking zones, four Straight Mode zones and one Overtake Mode detection point.
- High humidity, extreme heat and sudden downpours could create a major challenge for drivers and teams.
Malaysia Returns to the Formula 1 Calendar at Sepang
Following an eventful race in Azerbaijan, where George Russell narrowly defeated Max Verstappen, Formula 1 moves directly to the Bahrain Grand Prix in Malaysia. The event will take place at the Sepang International Circuit after Bahrain’s race was removed from its original April calendar slot and Malaysia stepped in to host it during the first weekend of October.
The Malaysian Grand Prix will mark Formula 1’s first visit to Sepang since 2017. However, Malaysia’s connection with Formula 1 began in the 1990s, when then-Prime Minister Dr Mahathir Mohamad initiated the development of a first-rate motorsport venue.
Designed by renowned circuit architect Hermann Tilke, Sepang began construction in 1997 and staged its inaugural Grand Prix in 1999. Ferrari driver Eddie Irvine won that first race, helping establish Sepang as a fast and demanding circuit and setting a model for other purpose-built Formula 1 venues.
What Makes the Sepang International Circuit Challenging?
Only 10 drivers on the current Formula 1 grid have previously competed in Malaysia, and their most recent experience came almost a decade ago. Those drivers may hold an advantage over their younger rivals, but the long absence means the entire field is likely to face a steep learning curve.
Former Renault F1 driver Jolyon Palmer described Sepang as a circuit that combines high-speed flow with demanding braking zones:
“Sepang is a brilliantly flowing lap, with a fast middle sector splintering big braking zones with plenty of switchback opportunity.
“Turn 1 is extremely wide and it’s important to attack the brakes before getting back to hug a late apex to get nicely out of the tighter Turn 2 and up the following curved straight.”The middle sector is all about high-speed balance and flow. A committed entry is needed on the entry for the incredibly high-speed run through 5 before picking your change of direction perfectly into 6 as the track drops away slightly. This is the highest speed cornering section on the circuit. Turn 7 is a bit slower and easy to run wide on the exit before the final part of that sequence which should be an acceleration zone if executed right.
“Braking for both Turns 11 and 14 are tricky and all about feel as you are coaxing the car through right hand bends on approach, especially for 14 where it’s easy to lock the right front. Again, the exit of this corner is critical, leading into the final big stamp on the brakes and an overtaking chance at the final turn.”
The Sepang layout includes a wide first turn, a high-speed middle sector and several heavy braking areas. Drivers must manage changes of direction, corner exits and traction throughout the lap, with the final turn providing an important overtaking opportunity.
The circuit’s difficulty is increased by its unpredictable climate. High humidity, extreme heat and sudden downpours have all affected previous races in Malaysia, creating additional demands for car setup, tyre management and driver concentration.
Sepang Straight Mode Zones and Overtake Detection
Under the current regulations, Straight Mode is an aerodynamic configuration that reduces drag and allows cars to accelerate more efficiently toward top speed. The rear wing opens to create a gap, as it did under the former Drag Reduction System, while the uppermost elements of the front wing also move down at the same time as the rear wing’s top element.
Straight Mode is used on every lap in dry conditions wherever it has been designated. Cars switch between configurations according to their position on the circuit, using maximum downforce through corners and reduced drag on the straights.
There are four Straight Mode zones at the Sepang International Circuit. They are located on the start-finish straight, between Turns 3 and 4, between Turns 8 and 9, and between Turns 14 and 15.
Overtake Mode replaces DRS and functions as a new power mode. It enables a driver to recharge more electrical energy and access an additional electrical power profile, allowing the car to maintain a higher speed for longer.
There is one Overtake Mode detection point per lap. It is expected to be positioned on the exit of the final corner, leading onto a long straight. Drivers can use Overtake Mode on the following lap if they are within one second of the car ahead at the detection point.
At Sepang, the Overtake Detection marker is located as drivers exit Turn 15. The Overtake Activation line follows at the beginning of the start-finish straight.
Why This Matters
Malaysia’s return to the Formula 1 calendar brings the championship back to a circuit with a distinctive combination of high-speed corners, long straights, technical braking zones and difficult weather conditions. Although 10 current drivers have raced at Sepang before, their limited recent experience means teams will need to gather data quickly and adapt to a circuit that has not featured in Formula 1 competition since 2017.
The four Straight Mode zones and the single Overtake Mode detection point will also make aerodynamic efficiency, energy deployment and positioning important factors during the race. Weather changes could further influence how teams approach the event.
Frequently Asked Questions
When was the last Formula 1 race at Sepang?
The last Formula 1 Grand Prix at the Sepang International Circuit was held in 2017. The Malaysian Grand Prix returns to the venue after that absence.
How many Straight Mode zones are there at Sepang?
There are four Straight Mode zones: on the start-finish straight, between Turns 3 and 4, between Turns 8 and 9, and between Turns 14 and 15.
Where is the Overtake Mode detection point?
The Overtake Detection marker is located as drivers exit Turn 15. The activation line is at the beginning of the start-finish straight.





