Your Complete Guide to the 2026 BMW 3 Series
Eleven research pages covering trims, specifications, ownership, and every comparison that matters, written for Northern California drivers by the team at BMW of Napa Valley in Fairfield.
About the 2026 BMW 3 Series
The 2026 BMW 3 Series is the compact luxury sedan this class was built around, offered in four builds from $48,000 MSRP to $64,300 MSRP. The 330i uses a 2.0L TwinPower Turbo 4-cylinder making 255 horsepower; the M340i uses a 3.0L M TwinPower Turbo inline 6-cylinder making 386 horsepower. Rear-wheel drive is standard on both, xDrive all-wheel drive is available on both, and every car centers on the BMW Curved Display with a 14.9-inch touchscreen. Its 16.9-cubic-foot trunk is roomy for the segment. At BMW of Napa Valley, we stock the lineup for drivers across Solano County and Northern California, from Vacaville and Vallejo to American Canyon, right off I-80.
New for 2026, both engines carry 48-volt mild-hybrid assistance, and the 330e plug-in hybrid is no longer offered in the United States. Step up to the M340i and you add an M Sport Differential, M Sport Brakes, 19-inch wheels, blind-spot warning, and parking sensors as standard, with 60 mph arriving in about 4.1 seconds in xDrive form. The rear-wheel-drive 330i is EPA-estimated at 31 MPG combined, competitive efficiency for a car with this much performance, and welcome on a Northern California commute.
Where to start. Cross-shopping the segment? Begin with the Mercedes C-Class comparison or the Audi A5 comparison. Deciding between builds? The trims guide lays out the step-up costs, and the specifications page has every number. Weighing gas against electric? Read 3 Series vs the 2027 i3. Already own one? The maintenance guide covers intervals and ownership costs.
MSRP excludes the $1,350 destination fee, tax, title, license, and dealer fees. Pricing and equipment can change; confirm current pricing with the dealership. BMW of Napa Valley, 2399 Auto Mall Pkwy, Fairfield, CA 94533. Call (707) 402-1500.