New research from car insurance specialist MoneySuperMarket highlighted how driver caffeine habits may influence road safety and, in turn, insurance risk.
The study showed that 37% of drivers consume caffeinated drinks before setting off, and 44% take a caffeine boost during journeys. While caffeine can temporarily improve alertness, excessive intake can trigger a "caffeine crash," leading to sudden drops in energy, focus and mood. Nearly 28% of drivers reported feeling jittery or "on edge" after consuming caffeine.
Alicia Hempsted, car insurance expert at MoneySuperMarket, noted that although caffeine is not a controlled substance and there is no legal restriction on how much drivers can consume before driving, impaired alertness from a "caffeine crash" could increase the likelihood of accidents.
Even minor incidents can affect insurance premiums, claims histories and no-claims discounts. With driver fatigue contributing to around 20% of serious road accidents, managing caffeine intake safely becomes an insurance-relevant consideration.
The research also revealed a gap in public knowledge. According to the study, only 10% of drivers were aware of the recommended daily caffeine limit of 400 mg for adults, while a third were completely unaware of any guideline. Popular caffeinated beverages such as energy drinks and large lattes can contain up to 75% of the daily recommended intake in a single serving, increasing the risk of a "caffeine crash" during long journeys.
From an insurance perspective, this presents both a risk‑management issue and a claims concern. Drivers who overconsume caffeine may be more prone to incidents, which can trigger higher premiums or affect renewal terms. Insurers increasingly consider lifestyle and behavioural factors when assessing risk, and the findings suggest that caffeine habits could become part of broader road safety awareness campaigns and driver education initiatives promoted by insurers.
Looking ahead, MoneySuperMarket advises drivers to treat caffeine as a tool for alertness rather than a substitute for rest. Monitoring intake, avoiding excessive consumption during journeys, and combining caffeine with adequate sleep and breaks can reduce the risk of accidents.
For insurers, raising awareness about such behavioural risks may help reduce claims, while for drivers, understanding the potential impact of caffeine on alertness is a practical step toward safer driving and maintaining insurance benefits.
