2023 BMW 430i Coupe: MPG and fuel economy
The 2023 BMW 430i Coupe is rated by the U.S. Environmental Protection Agency at 28 combined MPG, with 25 MPG in the city and 34 MPG on the highway. That sits a little below the average car in the Subcompact Cars class for the same model year.
This page collects every fuel-economy figure the EPA publishes for the 2023 BMW 430i Coupe. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- The most efficient car in the Subcompact Cars class for the 2023 model year is the BMW i4 eDrive35 Gran Coupe (18 inch Wheels) at 113 MPG.
- EPA estimates this car costs around $1,500 more in fuel over five years than an average new vehicle of the same model year.
- Requires premium gasoline, which typically adds about 40 to 60 cents per gallon to the EPA's annual fuel cost estimate.
Fuel economy at a glance
These are the EPA's official ratings for the 2023 BMW 430i Coupe. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 28 MPG |
| City MPG | 25 MPG |
| Highway MPG | 34 MPG |
| Annual fuel cost | $2,450 |
| Tailpipe CO₂ | 313 g/mi |
| Fuel type | Premium |
How the 2023 BMW 430i Coupe compares
The 2023 BMW 430i Coupe returns 28 combined MPG. Cars in the Subcompact Cars class for the same model year average 30.3 MPG, which puts this car behind the class average by about 8%.
The most efficient car in the Subcompact Cars class for the 2023 model year is the BMW i4 eDrive35 Gran Coupe (18 inch Wheels) at 113 MPG. The bar chart below puts the BMW 430i Coupe alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2023 model year (across all classes) returns 33.7 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2023 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 535.7 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $1,225 |
| Average driver, 15,000 miles per year | $2,450 |
| Heavy driver, 25,000 miles per year | $4,083 |
Year-over-year MPG for the BMW 430i Coupe
The EPA has rated the BMW 430i Coupe across 10 model years, from 2017 BMW 430i Coupe through 2026 BMW 430i Coupe. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
Combined MPG has stayed in roughly the same range across the run. The peak rating came with the 2025 BMW 430i Coupe at 31 MPG.
| Year | Combined MPG | Open year page |
|---|---|---|
| 2026 | 31 MPG | 2026 BMW 430i Coupe |
| 2025 | 31 MPG | 2025 BMW 430i Coupe |
| 2024 | 28 MPG | 2024 BMW 430i Coupe |
| 2023 | 28 MPG | this page |
| 2022 | 28 MPG | 2022 BMW 430i Coupe |
| 2021 | 29 MPG | 2021 BMW 430i Coupe |
| 2020 | 27 MPG | 2020 BMW 430i Coupe |
| 2019 | 27 MPG | 2019 BMW 430i Coupe |
| 2018 | 27 MPG | 2018 BMW 430i Coupe |
| 2017 | 27 MPG | 2017 BMW 430i Coupe |
Compare against other Subcompact Cars for 2023
If you are cross-shopping the 2023 BMW 430i Coupe, the most useful comparison is against the other cars in the Subcompact Cars class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The BMW i4 eDrive35 Gran Coupe (18 inch Wheels) leads this group at 113 MPG, 85 MPG ahead of the 2023 BMW 430i Coupe.
Specifications
The 2023 BMW 430i Coupe runs a 2-liter 4-cylinder turbocharged engine paired with a automatic (s8), sending power through rear-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Subcompact Cars
- Engine
- 2L 4-cylinder turbocharged
- Transmission
- Automatic (S8)
- Drivetrain
- Rear-Wheel Drive
- Fuel type
- Premium
- Annual petroleum use
- 10.6 barrels per year
- Start-stop system
- Yes
Common questions about the 2023 BMW 430i Coupe
Quick answers to the questions people most often search for when looking up the 2023 BMW 430i Coupe.
-
Is the 2023 BMW 430i Coupe fuel efficient?
It is in line with the rest of the class. The 2023 BMW 430i Coupe returns 28 combined MPG, and the average car in the Subcompact Cars class for the same model year sits at 30.3 MPG. -
What MPG does the 2023 BMW 430i Coupe get?
The EPA rates the 2023 BMW 430i Coupe at 28 combined MPG, 25 MPG in city driving, and 34 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2023 BMW 430i Coupe per year?
The EPA estimates an annual fuel cost of $2,450 for the 2023 BMW 430i Coupe. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
Does the 2023 BMW 430i Coupe require premium gas?
Yes. The EPA lists the 2023 BMW 430i Coupe as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump. -
Has the BMW 430i Coupe become more fuel efficient over time?
Combined MPG has stayed close to flat across the run. Both the earliest (2017 BMW 430i Coupe, 27 MPG) and most recent (2026 BMW 430i Coupe, 31 MPG) versions sit in the same range. -
How much CO₂ does the 2023 BMW 430i Coupe emit?
Tailpipe CO₂ emissions are 313 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 4,695 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2023 BMW 430i Coupe?
City driving returns 25 MPG and highway driving returns 34 MPG, a gap of 9 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise. -
What engine is in the 2023 BMW 430i Coupe?
The 2023 BMW 430i Coupe has a 2-liter 4-cylinder turbocharged engine (EPA description: SIDI). Smaller turbocharged engines like this one tend to deliver bigger-engine power on demand while keeping fuel economy closer to a non-turbo version of the same displacement. -
What transmission and drivetrain does the 2023 BMW 430i Coupe have?
The 2023 BMW 430i Coupe comes with a automatic (s8) transmission and rear-wheel drive. -
How does the 2023 BMW 430i Coupe compare to the best car in its class?
The most efficient car in the Subcompact Cars class for the 2023 model year is the BMW i4 eDrive35 Gran Coupe (18 inch Wheels) at 113 combined MPG. The BMW 430i Coupe returns 28 MPG, a gap of 85 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.