Why Passengers Get Motion Sickness in EVs: Torque, Silence & African Adoption Hurdles in 2026

The surge in electric vehicles and a new comfort challenge

Electric cars have moved from niche to mainstream in the last few years, with global sales topping 12 million units in 2025, according to the International Energy Agency. In Africa, countries such as South Africa, Kenya and Nigeria have seen a 35 % year‑on‑year increase in EV registrations, driven by lower operating costs and growing government incentives.

While drivers often rave about instant acceleration and quiet cabins, a growing chorus of passengers report feeling nauseous, dizzy or disoriented on short trips. Ride‑hailing platforms in Lagos and Nairobi have logged a spike in driver‑reported complaints about “sick riders” since the rollout of low‑cost EV models in early 2026.

The phenomenon is not just anecdotal. A study published in the *Journal of Vehicle Dynamics* in July 2026 examined 1,200 trips across three continents and found that 18 % of non‑driver occupants in EVs reported motion‑related discomfort, compared with 9 % in comparable internal‑combustion vehicles.

Technical reasons behind the nausea

The first culprit is instantaneous torque. Electric motors deliver full power from a standstill, creating rapid changes in acceleration that the inner ear interprets as unexpected motion. Researchers at the University of Michigan explain that this “torque surge” can outpace the brain’s ability to reconcile visual cues with vestibular signals, especially when passengers are looking at stationary objects inside the cabin.

A second factor is the near‑silence of EVs. Traditional cars mask engine noise, giving occupants subconscious auditory feedback that matches the feeling of movement. In an EV, the lack of engine hum removes that cue, leaving the eyes and ears out of sync. According to a 2026 report by the European Automobile Manufacturers Association, 62 % of surveyed passengers said they felt “unsettled” when the car accelerated silently.

Finally, regenerative braking – where the motor works as a generator to recapture energy – creates a distinct deceleration pattern that feels different from the friction‑based braking most people are used to. The sudden, often pulsing slowdown can trigger the same sensory mismatch that causes motion sickness in virtual‑reality environments.

Why it matters for Africa’s EV rollout

African markets are uniquely sensitive to passenger comfort because many commuters rely on shared rides and public transport. In Nairobi, a 2026 survey by the Kenya Transport Authority showed that 27 % of respondents would avoid an EV if they or a family member experienced motion sickness on a single ride. Similar sentiment was recorded in Lagos, where ride‑hailing firms estimate a potential loss of up to 5 % in trip volume if the issue is not addressed.

Local manufacturers such as South Africa’s Barlow EV and Nigeria’s GreenDrive are counting on fleet sales to achieve economies of scale. If fleet operators perceive EVs as a risk to passenger satisfaction, they may postpone large‑scale purchases, slowing down the continent’s transition to cleaner mobility and jeopardising climate‑related targets set for 2030.

The discomfort issue also intersects with the informal economy. Many African cities have a high proportion of informal taxis that lack sophisticated suspension systems. Adding the torque‑induced jolts of an EV can amplify the feeling of instability, making the ride less tolerable for passengers who already endure rough road conditions.

What makers, regulators and riders can do next

Automakers are already experimenting with software‑based solutions. Tesla’s “Smooth Acceleration” mode, introduced in early 2026, softens torque delivery during the first few seconds of a launch, reducing the peak g‑force by up to 30 %. Similar features are being rolled out by Chinese OEMs like BYD and European firms such as Volkswagen, which have pledged to make the setting standard on all models sold in Africa by 2027.

Regulators in South Africa and Kenya have begun to incorporate passenger‑comfort metrics into vehicle homologation tests. The South African National Standards body announced a pilot programme in September 2026 that will require new EVs to pass a “motion‑sickness threshold” measured with a standardized questionnaire during test drives.

For riders, simple behavioural tweaks can help. Keeping eyes on the horizon, using the front seat when possible, and avoiding sudden lane changes are practical tips shared by the World Health Organization’s mobility health unit. Ride‑hailing apps are also adding a “comfort‑mode” toggle that signals drivers to use gentler acceleration profiles.

Quick Answers

Why do passengers feel motion sickness in electric cars?
Instant torque, silent cabins and regenerative braking create a mismatch between what the eyes see and what the inner ear feels, leading to nausea.

How could motion‑sickness affect EV adoption in Africa?
If passengers avoid EVs, fleet operators may delay purchases, slowing down the shift to cleaner transport and affecting climate goals.

What can manufacturers do to reduce passenger discomfort?
They can soften torque delivery with software modes, improve cabin acoustics and include comfort‑testing in homologation processes.

Source: www.bbc.co.uk