What is the emission standard for the 2017 Focus?

[StLane]

The 2017 Focus complies with the China V emission standard. The China V standard, also known as the National Phase V Motor Vehicle Pollutant Emission Standard, has an emission control level equivalent to the Euro 5 standard currently implemented in Europe. It imposes stricter limits on vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and particulate matter. The dimensions of the 2017 Focus are 4647 mm in length, 1810 mm in width, and 1468 mm in height. It features a new family design with sharp-looking LED headlights and striking L-shaped daytime running lights. The front of the hatchback version is largely similar to the sedan version but appears more compact and agile. The rear end is fuller compared to the current model, and the newly designed LED taillights offer a highly noticeable display effect.

[VanElliana]

When I worked at the DMV, I was often asked this type of question. The 2017 Focus models mostly comply with the China 5 emission standards, as most gasoline-powered vehicles produced domestically in 2017 met this standard. However, pay attention to license plate registration policies in different cities—places like Beijing and Shanghai started piloting the China 6 standard as early as 2016, so local dealers might have supplied China 6-compliant models in advance. The safest approach is to check the emission standard column on the vehicle conformity certificate or open the engine hood to locate the environmental information label. I remember last year when helping a friend inspect a used car, we found that the 2017 Focus 1.5T model he was looking at had a China 5 label.

[Hugh]

Attention to friends who are into classic car modifications! Before purchasing a 2017 Focus, be sure to check its emissions standards. Most models of this generation comply with China 5, but China 6 wasn't fully implemented until July 2019. Here's a practical way to confirm: note down the last four digits of the VIN, then ask a repair shop to read the ECU data stream with a diagnostic tool to check the emission standard code recorded in the OBD system. If you're planning long-term modifications, China 5 is still relatively friendly now—at least it's less hassle than China 4 during inspections.

[McSimon]

According to the database of Autohome, all 2017 Focus models comply with the China V emission standard. At that time, Ford had not yet upgraded to the China VI emission standard technology route, still using the older powertrains like the 1.5T Ecoboost and 1.6L naturally aspirated engines. The key point is to check the exhaust pipe: China V vehicles only have a main oxygen sensor, while China VI vehicles will have an additional rear oxygen sensor installed at the end of the exhaust pipe.