Compare 2026 BMW 430i vs. 2026 BMW M440i
Which 4 Series Model Is Right for You?
| Feature | 2026 BMW 430i | 2026 BMW M440i |
|---|---|---|
| 0-60 MPH† | 5.8 sec | 4.6 sec |
| Engine | 2.0-liter BMW TwinPower Turbo inline 4-cylinder | 3.0-liter BMW M TwinPower Turbo inline 6-cylinder |
| Horsepower | 255 hp | 386 hp |
| Combined MPG†† | 35 | 32 |
How do the BMW 430i and M440i Compare on Performance?
The BMW 430i is powered by a 2.0L BMW TwinPower Turbo four-cylinder engine producing 255 horsepower. It gets from 0 to 60 mph in as little as 5.6 seconds, runs through an 8-speed Sport Automatic Transmission, and comes with rear-wheel drive and selectable driving modes. It is a composed, confident car that handles daily driving with ease and never feels like it is working too hard.
The BMW M440i uses a stronger 3.0L BMW M TwinPower Turbo inline six-cylinder that produces an impressive 386 horsepower and reaches 60 mph in 4.6 seconds. That extra cylinder and power make a real difference in how the car drives, especially on open roads. M Sport Brakes, M Sport Suspension, and Variable Sport Steering sharpen the whole driving experience and give the M440i a more immediate, connected feel when you push it.
What Are the Interiors Like for the BMW 430i and M440i?
The cabins in both cars are thoughtfully designed and comfortable, but each has its own distinct personality. Both models include Comfort Access keyless entry, BMW Digital Key, and personalized memory settings that make the car feel like it knows you after just a few drives.
The BMW 430i interior leans toward clean and understated luxury. Fineline Light open-pore wood trim and SensaTec upholstery keep things looking polished without being flashy. Heated front seats, a power moonroof, and adjustable ambient lighting make it a pleasant place to spend time, whether you are commuting or cruising. If you prefer an interior that feels calm and refined, the 430i delivers that naturally.
The BMW M440i takes a sportier approach inside. Aluminum Rhombicle Anthracite trim and perforated SensaTec upholstery give the cabin a more dynamic look that matches the car's performance personality. It still has all the comfort features you would expect, including dual-zone climate control and power-adjustable seats with memory settings. It just feels a little more purposeful and energetic than the 430i.
Is the Technology the Same in Both?
For the most part, yes. BMW kept the tech package consistent across both trims, which means you are not giving anything up on the connectivity side by choosing one over the other.
Both the BMW 430i and M440i come with a HiFi Sound System, wireless device charging, and wireless Apple CarPlay and Android Auto integration. The Connected Package Professional adds real-time traffic updates, built-in navigation, and voice control through BMW's Intelligent Personal Assistant, which makes it easy to manage things without taking your hands off the wheel.
On top of that, both cars include Remote Services through the My BMW App, a personal eSIM 5G connection, and Remote Software Upgrades that keep the vehicle current over time. Whether you are driving around St. Louis or heading further out towards O'Fallon, IL, staying connected is never an issue in either model.
Which 4 Series Stands Out For You?
If you want a beautifully designed BMW that is comfortable, efficient, and enjoyable to drive every day without drawing too much attention, the BMW 430i is an excellent choice. If you want that same premium package but with noticeably more power and a sharper driving feel that makes every drive a little more exciting, the BMW M440i is worth every bit of the step up.
Both are great cars. The best way to figure out which one suits you is to test drive them both. Stop by Newbold BMW in St. Louis, MO, and let the cars speak for themselves.
†BMW AG preliminary test results. Actual acceleration results may vary, depending on specification of vehicle; road and environmental conditions; testing procedures and driving style. These results should be used for comparison only and verification should not be attempted on public roads. BMW urges you to obey all posted speed laws and always wear safety belts.
†Preliminary EPA-estimated figures are for comparison purposes only. Your actual mileage will vary, depending on speed, driving habits, trip length and driving conditions; actual mileage may be lower. Note for MPGe: All data are provisional and subject to official confirmation. The provisional power consumption figures have been calculated based on the ECE test cycle.
May not represent actual vehicle. (Options, colors, trim and body style may vary)