Quick answer
A BMW M4’s turbocharged inline-six delivers high performance but typically sees around 16 to 20 mpg combined. Spirited driving can lower mpg further.
Detailed answer
BMW’s M4 pairs a potent turbocharged six-cylinder with sharp handling, prioritizing performance over top-tier mpg. In typical combined conditions, owners report mid to high teens. Gentle highway cruising might reach 20 mpg, but track days or aggressive city driving can plummet it to the low teens or single digits.
Premium fuel is recommended for optimal engine knock resistance. Tire choices—often wide, high-performance rubber—add rolling resistance, raising consumption. Still, if you keep oil changes frequent, monitor tire inflation, and avoid excessive revving around town, you can maintain closer to 18–20 mpg. The M4 stands out for its blend of daily usability and sports-car thrills, so fueling more often is part of the deal. Enthusiasts often accept the trade-off for exhilarating acceleration and classic BMW dynamics.