Manual Transmission Driving Stimulates Brain Health, Japanese Study Finds

Key Takeaways

• Driving a manual transmission car can stimulate the prefrontal cortex and improve cognitive function.
• The physical sequence of driving a manual transmission is particularly beneficial for the region of the brain that handles memory, attention, and decision-making.
• Operating a manual transmission every day can be a daily, low-grade brain workout that aging brains would otherwise miss out on.
• Manual transmissions are fading across the globe, with only 1-2% of new vehicles sold in Japan featuring a clutch pedal.
• Only around 24 new vehicles are still available with manual transmissions in the U.S. as of 2026.

What is the Science Behind Manual Transmission and Brain Health?

According to Professor Ryuta Kawashima, the physical sequence of driving a manual transmission is particularly stimulating for the region of the brain that handles memory, attention, and decision-making. This is because driving a manual transmission requires the coordination of multiple tasks, such as pressing the clutch pedal, shifting gears, and accelerating.

This complex sequence of actions requires the brain to work harder, which can lead to improved cognitive function. In contrast, driving an automatic transmission does not require the same level of brain activity, as the car’s computer handles the gear shifting.

How Does Manual Transmission Driving Affect Cognitive Function?

The study found that operating a manual transmission every day can be a daily, low-grade brain workout that aging brains would otherwise miss out on. This can help improve cognitive function over time, particularly in areas such as memory, attention, and decision-making.

In my experience, driving a manual transmission car requires a high level of concentration and attention, which can help keep the brain active and engaged. This can be particularly beneficial for older adults who may be looking for ways to stay mentally sharp.

What are the Implications of the Study’s Findings?

The study’s findings have significant implications for the automotive industry, as well as for individuals who are looking for ways to improve their cognitive function. With manual transmissions fading across the globe, the study suggests that there may be a need to rethink the way we design and market cars.

In addition, the study’s findings may encourage individuals to consider purchasing a manual transmission car, particularly if they are looking for a way to stay mentally sharp. However, with only around 24 new vehicles available with manual transmissions in the U.S. as of 2026, options may be limited.

How Does Manual Transmission Take Rate Vary by Region?

The study found that manual transmission take rate varies significantly by region. In Japan, only 1-2% of new vehicles sold feature a clutch pedal, while in the U.S., the manual transmission take rate sits at 0.7%.

In contrast, countries such as Spain and Italy have much higher manual transmission take rates, with 41% and 48% of new vehicles sold featuring a clutch pedal, respectively. This suggests that there may be cultural or regional factors at play that influence the popularity of manual transmissions.

What are the Takeaways for Car Buyers?

For car buyers, the study’s findings suggest that purchasing a manual transmission car may be a good option for those looking to improve their cognitive function. However, with limited options available, buyers may need to look to older models or specialty cars that still offer a manual transmission.

In addition, the study’s findings may encourage car buyers to consider the benefits of driving a manual transmission car, beyond just the cognitive benefits. Driving a manual transmission car can be a fun and engaging way to experience the road, and may be a good option for those looking for a more immersive driving experience.

Frequently Asked Questions

Q: Does driving a manual transmission car really improve cognitive function?

A: According to the study, yes, driving a manual transmission car can improve cognitive function, particularly in areas such as memory, attention, and decision-making.

Q: How many new vehicles are still available with manual transmissions in the U.S.?

A: As of 2026, only around 24 new vehicles are still available with manual transmissions in the U.S.

Q: What is the manual transmission take rate in Japan?

A: The manual transmission take rate in Japan is only 1-2% of new vehicles sold.