Step 3 » GENERAL learning environment Category D (D, D1, Tb, Tv)

GENERAL Learning Environment Category D (D, D1, Tb, Tv)
Question 123 of 485

What is the mileage at which the replacement of the spark plugs is recommended, in order to avoid the risk of functional failures and engine consumption failures?

A after every 5000 km;
B after 15000-18000 km;
C after 30000-35000 km.

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