Spark Plugs for BMW M4 CS — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: Medium | Replacement Cost in India: ₹3,000–₹12,000
What is the Spark Plugs?
Spark plugs ignite the air-fuel mixture in the combustion chamber.
How the Spark Plugs Works
They create a spark using high voltage from ignition coils.
Why the Spark Plugs is Important
Essential for engine start and smooth performance.
Common Problems with the Spark Plugs
- Fouling
- Carbon buildup
- Wear
Warning Symptoms of a Failing Spark Plugs
- Misfire
- Poor mileage
- Rough idle
Common Causes of Spark Plugs Failure
- Old age
- Improper fuel mix
- Oil contamination
Impact on Car Performance
Bad plugs reduce efficiency and increase fuel consumption.
DIY Fix Guide — Step by Step
- Remove plug using wrench
- Inspect for deposits
- Clean or replace
- Install new plugs correctly
- Torque to specification
Maintenance Tips
- Replace every 20,000–30,000 km
- Use OEM plugs
Spark Plugs Replacement Cost in India
Expect to pay between ₹3,000 and ₹12,000 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 Spark Plugs Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Spark Plugs listings.
When to Replace the Spark Plugs
Every 25,000 km or when misfires occur.