Cheap Hyundai i40 Air Flow Meter

Yes, but only on certain variants — the i40's petrol engines (the 1.6 GDi and 2.0 GDi) use a mass air flow (MAF) sensor, and the diesel engines (the 1.6 CRDi and 2.0 CRDi) also use one as part of their intake management system, so the part does exist across the i40 range. However, the specific sensor used varies by engine code, so you need to match on engine code rather than just fuel type or engine size. Check your V5 or run a VIN check to find your exact engine code before requesting quotes from a breaker.

The Hyundai i40 was produced as a single generation running from 2011 to 2019, with a facelift arriving around 2015, so a 2012 car is pre-facelift and a 2015 car sits right at or just after that boundary. Whether the MAF sensor crosses that boundary depends on your engine code — if both cars share the same engine code the sensor may well interchange, but ancillary and mounting changes around the facelift mean you should confirm compatibility with the breaker against your specific registration before buying.

No — trim level does not affect which air flow meter you need on the i40; SE, Premium, Sport, and any other trim designation are all cosmetic and equipment differences rather than mechanical ones. What matters is the engine code, which will be identical across trim levels fitted with the same engine. Give the breaker your engine code and they can match the correct sensor regardless of what badge is on the car.

No — body style makes no difference to air flow meter fitment on the i40; the sensor is determined entirely by the engine, not whether the car is a saloon or a Tourer estate. A sensor from an estate with the same engine code as your saloon (or vice versa) is equally relevant for matching purposes. Focus your search on the engine code and let the breaker verify the part number.

No — petrol and diesel engines use different air flow meters, and within each fuel type the 1.6 and 2.0 variants also have their own engine codes which can mean different sensors. For example, the 1.6 GDi petrol and the 1.6 CRDi diesel will not share the same MAF sensor even though the displacement is the same. Always supply your engine code — found on your V5 or via a VIN check — when getting quotes from a breaker so they can match the correct unit.

Whether a used MAF sensor requires any ECU pairing or coding after fitting is something you should raise directly with the breaker and ideally confirm with a Hyundai specialist or diagnostic technician, as this can vary and is not something we can state as fact here. In many cases MAF sensors are plug-and-play without coding, but it is worth clarifying before purchase rather than after. A breaker experienced with i40 parts should be able to give you practical guidance based on what they have seen.