What type of gasoline should a BMW M4 use?

[SanMolly]

BMW M4 generally uses 95-octane gasoline. Engine oil viscosity classification: 10W-40 is its SAE standard viscosity value. This viscosity value first indicates that this oil is multi-grade oil. W stands for WINTER, and the number before W represents the flow performance at low temperatures. The smaller the number, the better the starting performance at low temperatures. The number after W represents the stability of the oil at high temperatures (i.e., the possibility of thinning). The larger the number, the better the high-temperature stability of the oil. Function of engine oil: Engine oil can lubricate and reduce wear, assist in cooling, seal and prevent leaks, prevent rust and corrosion, and provide shock absorption for the engine. It is known as the 'blood' of the car. Choosing the right engine oil and changing it regularly can maintain the engine in good condition and extend its service life.

[Hazel]

I've been driving a BMW M4 for several years and always fill up with 98 octane gasoline at the gas station - it's my personal habit. Initially, I hesitated about saving money by using 95 octane, but after trying it once, I noticed the acceleration wasn't as smooth on the highway and there was some minor vibration. After checking the owner's manual, BMW does state that 95 octane can be used as the minimum requirement, but strongly recommends 98 octane to achieve the best performance from the twin-turbocharged engine. Especially if you drive aggressively, 98 octane helps prevent knocking issues and keeps the engine sound cleaner. My suggestion is that 95 octane might be acceptable for regular city driving, but when hitting the track or going on long-distance sprints, 98 octane is definitely the preferred choice. After all, the M4 is a high-performance coupe that needs proper care - otherwise, engine wear accelerates and repairs become more expensive. Overall, sticking with 98 octane gasoline gives me more confidence in my driving experience and reduces maintenance headaches.

[CamilleLynn]

As a mechanic who frequently repairs cars, I've encountered many BMW M4 owners coming to me due to using the wrong gasoline. BMW officially recommends 95 octane as the baseline, but 98 octane is more reliable, especially in preventing knocking at high RPM ranges. I've handled several cases of M4s using lower-octane fuel and found that the ignition system tends to accumulate carbon deposits, leading to unstable power output. Prolonged use may even damage the piston rings. I recommend owners prioritize 98 octane gasoline because its higher octane rating better matches the engine's compression ratio. If only 95 octane is available locally, using it temporarily once or twice is acceptable, but long-term use requires switching back to 98 octane to avoid major overhauls. Checking the sticker on the fuel cap or the manual is more reliable. Remember, gasoline choice directly impacts performance and longevity—don't save small money only to incur big losses.

[MacDominic]

As a die-hard BMW fan, I firmly believe the M4 deserves nothing less than 98-octane fuel! This car is a born beast, with an engine designed specifically for high-octane performance. At a car meet, I test-drove two M4s—one running on 95-octane felt sluggish on throttle response, while the other fueled with 98-octane delivered explosive power instantly. Daily driving with 98-octane ensures smoother idling and a more thunderous exhaust note. Though pricier, it's worth every penny to protect the engine from knocking. My advice? Go for 98-octane without hesitation.