Mercedes Unveils Major Technical Overhaul as Final Pre-Season Test Commences
Mercedes introduced a comprehensive upgrade package during the opening day of the final 2026 pre-season testing session held in Bahrain. The German outfit's substantial modifications signal their preparations for the upcoming campaign ahead of the season's start.

The Silver Arrows have rolled out an impressive array of technical enhancements as the paddock descended upon Bahrain for the concluding round of winter testing in 2026. The Brackley-based team implemented their significant upgrade package from day one of the crucial testing phase, showcasing their commitment to fine-tuning their machinery before competitive racing resumes.
This final opportunity to evaluate new components and refine their car setup proved ideal timing for Mercedes to introduce the substantial modifications. With the pre-season test window drawing to a close, the team used this session to gather critical data on their enhanced package and assess its performance characteristics across various track conditions.
The deployment of these upgrades during the Bahrain test underscores the competitive intensity building across the 2026 grid, as teams make their final adjustments and optimizations before the championship begins. For Mercedes, the combination of their technical developments and real-world testing data will prove invaluable as they pursue their objectives when the season officially gets underway.
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Related Regulations
Hover over badges for quick summaries, or scroll down for full official text and simplified explanations.
Full Regulation Text
Article B11.2
Provisions for TCC
Chapter: B
In Simple Terms
TCC (Testing of Current Cars) sessions on European tracks are limited to a maximum of 9 hours per day, running between 9 AM and 7 PM. Only current-season F1 cars can be used (except for special tire testing), and drivers without a super license must use cars with a blue-green rear light.
- TCC sessions on European circuits limited to maximum 9 hours daily between 09:00-19:00
- Only current F1 cars permitted, except during out-of-competition tire testing
- Non-super license drivers must use cars equipped with blue-green rear light
- TCC restricted to specific testing types: pre-season testing, post-season test, tire testing, and substitute driver tests
Official FIA Text
TCC running limited to maximum nine hours between 09:00 and 19:00 on European circuits. Only current cars permitted except for out-of-competition tyre testing. Cars driven by non-super licence holders must have blue-green rear light. TCC limited to pre-season private/public collective testing, post-season test, out-of-competition tyre testing, and substitute driver test.
Article B11.2.1
TCC General Conditions
Chapter: B
In Simple Terms
Teams can conduct TCC (Tyre Compatibility Check) testing on European circuits for a maximum of 9 continuous hours between 9:00 AM and 7:00 PM, but only when there's no championship competition happening. Teams need permission if they want to do it differently.
- Maximum 9 continuous hours allowed per TCC session
- Testing window is 09:00 to 19:00 (9 AM to 7 PM)
- Only permitted on European circuits
- Cannot take place during championship competition weekends
Official FIA Text
TCC may only take place for maximum continuous nine hours between 09:00 and 19:00 on European circuits unless agreed otherwise, while no championship competition is taking place.
Article C10.2.5
Suspension Adjustment While Moving
Chapter: C10
In Simple Terms
Teams cannot change any part of their car's suspension system while the car is moving on track. All suspension adjustments must only happen when the car is stationary in the pit lane or garage.
- Suspension adjustments are strictly forbidden while the car is in motion
- Teams must wait until the car is completely stopped to make any suspension changes
- This rule applies to all suspension components and systems
- Adjustments can only legally occur in the pit lane or garage
Official FIA Text
No adjustment may be made to any suspension system while the car is in motion.
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