Why David Coulthard Believes Carlos Sainz Could Leave Williams in 2026

Carlos Sainz's move to Williams in 2025 was meant to be the start of a long-term project. After a promising debut season with two podiums, 2026 has been a dramatic reversal. David Coulthard, a 13-time Grand Prix winner, has publicly stated that Sainz will be "eyeballing" his next move, and a combination of a deeply flawed car, a cleverly structured contract, and circling rival teams has created a perfect storm of speculation .

Here is the full breakdown of why Sainz's future at Williams is the biggest story of the 2026 driver market.

David Coulthard's Assessment: From 'Project' to 'Eyeballing'

Coulthard directly addressed Sainz's situation, stating that given Williams' difficulties, the Spaniard will naturally be "eyeballing" alternatives . This marks a significant shift from his advice in 2024, when he urged Sainz to prioritize a competitive car over a long-term "project" role . The implication is clear: the project has failed to deliver, and Sainz is now actively assessing his options rather than fully committing to the Grove outfit's long-term plan .

The Devastating Reality: Sainz's 2026 Performance

After a promising 2025 debut season with two podiums, 2026 has been a dramatic reversal . Through seven races, the numbers are stark:

• 14th in the Drivers' Standings with just 6 points .
• 0 podiums, 0 wins .
• Only three top-10 finishes, with his best result (P9 in China) coming in a race where seven cars failed to classify .

Sainz has described the drop in competitiveness as a "shock" and admitted the season has "tested his faith" in the team . His frustration is clear: after fighting for podiums in 2025, he now finds himself fighting to escape Q1.

Technical Root Cause: The Troubled FW48

The FW48's problems are numerous and interrelated, creating a car that is fundamentally uncompetitive.

1. Excessive Weight: The car arrived approximately 28 kg overweight at the start of the season . Even after months of work, recent reports still indicate 24 kg of excess mass . This weight penalty has a cascading effect: it overheats the tires within just a few laps, causing grip to "fall off a cliff" and forcing drivers to brake meters earlier than their rivals .

2. Fundamental Lack of Downforce: Even if the weight problem were solved, Sainz has repeatedly stated the car is "fundamentally" lacking downforce . He has said, "I think we acknowledge that fundamentally even without the weight issue, this car is not good enough" . This was evident in Barcelona, where the car's lack of downforce was particularly exposed in high-speed corners .

3. A Recurring Historic Flaw: A persistent handling problem has resurfaced. Both Sainz and Albon have identified an issue where the car experiences reduced load on the inside-front tire in high-speed corners, making it feel unstable and as if it is "three-wheeling" . Albon noted this problem has been "exacerbated" in 2026 .

4. Reliability and Build Delays: The FW48 missed its first pre-season test, putting the team on the back foot . Sainz then suffered a power-unit failure in FP3 at the Australian Grand Prix, which prevented him from taking part in qualifying .

The combined effect of these issues has left the FW48 ranked as the ninth-fastest car on the grid, trailing even the Mercedes customer team Alpine .

The Contract Escape Hatch

Sainz signed a four-year deal with Williams that runs through 2028, but it contains a critical break clause . Team Principal James Vowles has confirmed that both sides can terminate the agreement at the end of 2026, making Sainz free to "review" his future and leave if he wishes .

There have been persistent reports, notably from Germany, that the contract specifically allows Sainz to exit if he receives offers from top-tier teams like Mercedes or Red Bull . While Vowles has publicly denied this specific clause, calling it "speculation" , the existence of the general 2026 break clause gives Sainz a very real, very public exit route.

This clause is already in play. Reports indicate that Sainz's management has opened talks with Red Bull, with both Ferrari and McLaren said to be monitoring the situation . Helmut Marko, Red Bull's advisor, has even suggested he is aware of such an escape clause, adding fuel to the fire .

James Vowles's Conflicted Public Stance

Williams Team Principal James Vowles has been forced into a difficult public balancing act.

• Commitment to the Drivers: He has expressed "zero doubt" that he wants to keep both Sainz and Albon, insisting they remain committed to the long-term project .
• Acknowledging the Problem: He has stated he has been "very honest" with Sainz about what went wrong during the team's disastrous pre-season .
• Confirming the Break Clause: He has explicitly confirmed the 2026 review point, effectively admitting that Sainz has a clear path out of the team .
• Predicting a Market Shake-Up: Vowles has acknowledged that a "big driver market move" is expected at the end of 2026 and that results—not words—will ultimately determine whether Sainz stays .

Why the Speculation is Mounting

The confluence of factors creates an undeniable narrative. A four-time Grand Prix winner is trapped in the ninth-fastest car on the grid. His contract gives him a guaranteed exit at the end of the season. His team principal has publicly confirmed that exit is on the table. Top teams are circling. And a former F1 legend has publicly stated that the driver is "eyeballing" the door .

While Sainz has publicly said his "priority" is to remain with Williams , the growing noise—including the concrete reports of discussions with Red Bull—strongly suggests he and his management are preparing contingency plans. Unless the FW48 experiences a miraculous transformation before the end of the season, the speculation surrounding Carlos Sainz's future will only intensify.