Which 2021 Cars Do Not Have a Particulate Filter?
3 Answers
2021 Cars Without Particulate Filters: Audi 2.0T high-power engine does not have one; Hongqi 2.0T does not have one; Toyota: None of its models are equipped with particulate filters; Honda: Lingpai Hybrid, CR-V Hybrid, Accord Hybrid, etc.; Mazda: Axela, CX-30, CX-5, etc.; BYD: Qin PLUS DM-i, Song PLUS DM-i. Function of Particulate Filters: Particulate filters can reduce the soot produced by diesel engines by more than 90%, and the captured particulate emissions are subsequently burned off during vehicle operation. To check if a vehicle has a particulate filter, you can use the following three methods: Check the and to see if there is a particulate filter function. Additionally, you can carefully review the fault codes in the manual to see if there is a "Particulate Filter" warning light indicator. Check the label on the oil cap. If the oil cap clearly states 0W-20 grade oil, it indicates the presence of a particulate filter. Look at the exhaust pipe behind the three-way catalytic converter to see if there is a cylindrical section. If there is, that is the particulate filter.
I remember in 2021, cars without particulate filters were mainly those naturally aspirated models without direct injection engines, such as the Honda Fit, Toyota Corolla Hybrid, certain configurations of the Mazda 3, as well as domestic brands like the Changan Eado PLUS and Geely Emgrand. Their engines had high combustion efficiency, relying solely on the three-way catalytic converter to meet the China VI emission standards. Without a GPF, they avoided many potential issues. A friend of mine drives a Fit that has never triggered a fault light to this day, and it even has slightly lower fuel consumption. However, GPFs primarily reduce exhaust particulates, so cars without them might not be subject to as strict emission standards. When buying, just make sure to thoroughly test the vehicle's condition.
As someone accustomed to older cars, I understand that in 2021, most vehicles without particulate filters were naturally aspirated engine models, such as the base trim Toyota Levin, Nissan Sylphy Classic, and certain variants of the Kia K3. These cars feature simpler engine structures, and their exhaust pipe designs inherently avoid the need for a GPF (Gasoline Particulate Filter). Compared to direct injection vehicles equipped with GPFs, these models eliminate the hassle of future GPF clogging repairs. When I was switching to a new car, I specifically checked the maintenance manual to avoid GPF-related issues, which can save a lot of trouble.
