2026-08-15 · 5 min read
BMW X3 Spark Plugs Malaysia — N20/B48/B58
N20 (F25): 4 iridium plugs every 60,000 km. B48 (G01 xDrive30i): 4 plugs every 60,000 km. B58 (G01 M40i): 6 plugs every 60,000 km. Malaysia cost: 4-cylinder RM 250–450; 6-cylinder RM 400–700. Worn plugs cause misfires and VANOS fault codes.
Plugs — F25/G01
- F25 N20: 4 iridium plugs, 60,000 km, RM 220–420
- G01 B48: 4 iridium plugs, 60,000 km, RM 250–450
- G01 B58 M40i: 6 iridium plugs, 60,000 km, RM 420–700
- Use only BMW-spec iridium — no standard copper plugs
Turbo + AWD — Spark Plug Quality Matters
The N20 and B48 engines in the X3 are turbocharged — combustion chamber pressure is higher than a naturally-aspirated engine. Cheap non-iridium plugs degrade faster under boost pressure, causing misfires you feel as hesitation under hard acceleration. On an AWD vehicle, a misfire causes one driven wheel to momentarily lose traction — the stability system corrects it, but this is unnecessary wear on the DSC actuators.