Mass Airflow Sensor for BMW M4 Competition — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: Medium | Replacement Cost in India: ₹5,000–₹20,000
What is the Mass Airflow Sensor?
Measures air entering engine for optimal fuel injection.
How the Mass Airflow Sensor Works
Sends airflow data to ECU for fuel calculation.
Why the Mass Airflow Sensor is Important
Ensures correct air-fuel ratio.
Common Problems with the Mass Airflow Sensor
- Sensor contamination
- Failure
Warning Symptoms of a Failing Mass Airflow Sensor
- Check engine light
- Poor mileage
Common Causes of Mass Airflow Sensor Failure
- Dust
- Oil contamination
Impact on Car Performance
Incorrect fuel delivery reduces performance.
DIY Fix Guide — Step by Step
- Clean sensor
- Check wiring
- Scan codes
- Replace if faulty
Maintenance Tips
- Clean regularly
Mass Airflow Sensor Replacement Cost in India
Expect to pay between ₹5,000 and ₹20,000 for genuine parts plus labour at an authorised BMW workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy Mass Airflow Sensor Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Mass Airflow Sensor listings.
When to Replace the Mass Airflow Sensor
When faulty or unresponsive.