Car interior unclean, dirtier than toilet?Is there any basis for this statement?


When washing a car, in most cases, it is mainly to wipe the appearance.In addition, after spending a lot of time cleaning the exterior of a vehicle, in many cases the interior doesn’t get much attention.However, one university has directly proved that indoor cleaning management is just as important as car body.Jonathan Cox, a microbiology professor and research team at Aston University in the UK, looked at how many pathogens were exposed to five cars between two and 17 years old.The cars were a two-year-old Peugeot 308, a five-year-old Volkswagen Golf, a nine-year-old Honda, a 13-year-old Ford Focus and a 17-year-old Peugeot 307 SW.Samples were collected from the driver’s seat, backseat, gear lever, instrument panel, steering wheel and trunk, and incubated at 37 degrees Celsius for 24 hours to confirm the results.In addition, for comparison, samples were taken from the restroom, a 24-hour public restroom, in two areas that could not easily be cleaned.The most polluted part per unit area is the trunk.A total of 1425 bacteria were detected.The reason is that many things are often placed in the trunk, especially fruits and vegetables, and even some roots or leaves tend to spoil in the trunk.Animals are also often found in the trunk, in which case some of the excrement debris falls into the trunk, so the trunk is the dirtiest.In the driver’s seat, 649 bacteria were detected per unit area.Because many people like to eat while driving, food debris can spill on the seat in the process, which can lead to bacterial growth.In addition, 407 bacteria were detected at the shift lever.Not washing your hands while eating or playing outdoors and touching the shift lever.The shift lever alone had more bacteria than toilet water, the researchers found.In addition, 323 bacteria were detected in the back seat, the dashboard (317), where foreign objects are most likely to fly when people talk or sneeze, and the steering wheel (317).The number of bacteria detected per unit area of public toilets was about 500.It was confirmed that the contamination levels in the car met the minimum standards for a public toilet, and much more than that in the trunk.The steering wheel is surprisingly clean because of the positive impact of frequent hand disinfection as a result of the pandemic.And, of course, the older the vehicle, the more bacteria there are.That’s because the longer a vehicle is used, the more likely bacteria are to enter from a more diverse environment.The types of bacteria found also varied.E. coli, which can cause food poisoning in humans, was detected in faeces.In addition, the genera Pseudomonas, Bacillus, Staphylococcus and red yeast were identified.Of course, Cox’s team adds, there’s no need to be overly sensitive about these findings.A lot of bacteria were found, but it didn’t cause serious problems in humans.Even if we drive every day, we won’t get sick.However, it warns against eating in the car, let alone picking up anything dropped in the car.He also stressed that cars need as much cleaning inside as they do outside, and make it a habit to thoroughly wipe down areas where bacteria can accumulate.

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