Where the 2026 BMW Z4 ShinesPunchy Powertrain Choices for Serious Pace In base sDrive30i form, the 2026 BMW Z4 uses a turbocharged four-cylinder engine that pulls strongly from low revs and keeps a steady surge of power across the band. The M40i trim adds a turbocharged six-cylinder that turns the roadster into a small, rear-drive missile, yet…
