I have recently purchased a BMW 4 Series and I'm wondering if it's necessary to use premium fuel in order to maintain its performance. I have read conflicting information online and I'm looking for some clarification.
ReplyUsing premium fuel may not be absolutely necessary for your BMW 4 Series, but it is highly recommended. Premium fuel contains a higher octane level which helps the engine perform at its best. It also reduces the risk of engine knock and damage in the long run.
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