Should you smoke inside the car?
The debate surrounding smoking in cars has intensified in Spain in recent weeks after reports emerged that the government may soon implement a law prohibiting smoking while driving. Advocates of this measure cite various reasons, including the health risks to passengers, particularly children, and the potential distractions posed by a burning cigarette. This discussion raises pertinent questions about personal habits and public safety in confined spaces.
One significant aspect of this issue is that smoking is already prohibited in rental cars and shared vehicle services. Recently, a driver experienced a hefty sanction from a popular car-sharing platform, Thousands, based in Berlin, after allegedly smoking up to four times within a rental car.
However, the driver firmly asserts his innocence . He claims not only that he did not smoke in the vehicle, but also that he does not smoke at all. This situation illustrates a growing trend in automotive technology where incidents of smoking within vehicles are monitored.
A Black Box for Smokers
The report from our German colleagues at Gamestar Tech sheds light on how car-sharing companies enforce their no-smoking policies. Similar to Spain, smoking is not permitted in shared vehicles, and detectors have been installed to monitor compliance. These devices can emit alarms if they detect smoke, providing companies with real-time data on the vehicle’s condition.
According to the company, the smoke detector in this instance activated four times during a brief 10-minute, three-kilometer trip. While the driver acknowledges that the alarm sounded, he emphasizes that he is not a smoker and insists he did not ignite a cigarette inside the vehicle.
In the article, Gamestar Tech discusses the activity peaks logged by the smoke detector, which recorded the supposed smoke emissions. The company imposes a fine of 100 euros for violations, but the driver remains resolute in his refusal to pay, arguing his side of the story.

To contest the fine, the driver reached out to the car-sharing company but was met with limited responses. The company merely presented the report detailing the four activation instances of the smoke detector. This situation reveals a potential imbalance in evidence where one party has technical data, while the driver lacks proof of his non-smoking status.
This case, while notable, is not unique. Social media is rife with similar complaints from other users who have encountered issues with the service at Miles, claiming that the smoke detector falsely activated without cause. In these reports, a recurrent fine of 100 euros is mentioned, and others have even faced charges on multiple occasions for identical reasons.
The smoke detectors utilized by Miles are designed by Bosch, a well-known name in automotive technology. In a different instance, a driver recounted a similar experience with a rental vehicle, resulting in a fine of 300 euros . The Consumer Information Association from Austria even highlights this growing concern as more drivers face penalties under dubious circumstances.
Remarkably, Bosch’s technology claims to differentiate between genuine smoking and mere residual odors from tobacco. This capability should ideally prevent drivers from being unjustly punished. The system employs artificial intelligence to notify fleet management when smoke is detected, facilitating quicker cleaning processes while maintaining vehicle hygiene.
Photo | Thousands Mobility and Hans Isaacson
As public concern grows about smoking in confined spaces, it is increasingly clear that advancements in technology coupled with stricter regulations are set to redefine how smoking is approached in vehicles. Whether these measures will ultimately serve public health or lead to further disputes remains to be seen, but the conversation is undoubtedly far from over.

