Is it safe to sleep in a car with the A/C on?
News reports occasionally describe tragic cases of people who die after falling asleep in a parked car with the engine running. Many assume the cause is simply a lack of fresh air inside the vehicle, but the real danger is an invisible killer: carbon monoxide.
Whether you're driving your own vehicle or using a Car Rental Bangkok service, understanding this risk can help keep every journey safe.
Engine Idling Produces Carbon Monoxide
When a gasoline or diesel engine is left idling, fuel combustion is often less efficient than when the vehicle is moving. As a result, the engine can produce higher levels of carbon monoxide, a colorless, odorless, and highly toxic gas.
Exhaust Fumes Can Enter the Cabin
Without airflow created by driving, exhaust gases may accumulate around the vehicle and underneath the chassis. If the vehicle has worn door seals, small body leaks, or ventilation pathways, carbon monoxide can gradually enter the passenger compartment through the ventilation system or other openings.
Carbon Monoxide Prevents Oxygen from Reaching Your Body
The greatest danger of carbon monoxide is how it affects the bloodstream. Hemoglobin normally carries oxygen throughout the body, but carbon monoxide binds to hemoglobin approximately 200–250 times more strongly than oxygen. This prevents oxygen from reaching the brain and vital organs, leading to unconsciousness and, if exposure continues, death.
To reduce the risk of exhaust-related problems, always avoid sleeping in a parked vehicle with the engine running. Choosing a professionally maintained Rental Car from a reputable Car Rental Bangkok provider also helps ensure the engine and exhaust system are properly inspected. ECOCAR RENT-A-CAR has over 13 years of experience providing reliable Car Rental services with well-maintained vehicles across Thailand. Whether you need an electric vehicle, a family SUV, or a Van Rental Bangkok service for group travel, every vehicle is regularly serviced to meet high safety standards.
Head Office Don Mueang Car Rental
Located at 279/57 Vibhavadi Rangsit Road, Sanambin Subdistrict, Don Mueang District, Bangkok 10210
Opening hours 0800 – 2000 hours Everyday
Call center 02 – 002 – 4606
092-284-8660 / 090-638-4888 / 086-993-3082
Line ID : @ecocar
Email : info@thairentecocar.com
WhatsApp : 0869933082
Siam Commercial Bank
Account number : 605-2588466
Account name : Thai Rent Eco Car Co., Ltd.
Swift - code เลขที่ SICOTHBK
Siam Commercial Bank Public Company Limited, Ongkharak Branch
Category : Bank
Address 439 Moo 1, Rangsit-Nakhon Nayok Road, Ongkharak Subdistrict, Ongkharak District Nakhon Nayok Province 26120 Telephone 037-381-258
Thai Rent Eco Car Co., Ltd. Head Office Taxpayer No. 0105556003679 No. 279/57 Grand I Design Village Vibhavadi Rangsit Road, Sanam Bin Subdistrict Don Mueang District, Bangkok 10210
Call 02-0024606
Vibhavadi Rangsit Road
**Read** Rental contract conditions (click)
