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2018 BMW 420i M Sport Automatic 2.0 (F32)
Shown: 2018 BMW 420i M Sport Automatic 2.0 (F32). Photo: Vauxford, CC BY-SA 4.0, via Wikimedia Commons
  • Newest year: 2020
  • Gas
  • Small cars

2015-2020 BMW 4 Series MPG & Fuel Cost

6 model years · 21–27 MPG combined

27 MPG
Combined
23 MPG
City
34 MPG
Highway
Annual fuel cost · 430i Convertible 2.0L 4-cyl turbo RWD
$2,970

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

Cheaper to fuel than 6 of 10 small car configurations, MY2020. Ranked against all rated configurations, not sales-weighted.

2015-2020 BMW 4 Series at a glance

The 2015-2020 BMW 4 Series covers 6 model years in the EPA database (90 configurations in all), rated 21–27 MPG combined. The newest model year, 2020, costs about $2,970 a year to fuel for its most efficient version, the 430i Convertible 2.0L 4-cyl turbo RWD (27 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2016, 2017, 2018, 2019 and 2020.

2015-2020 BMW 4 Series by model year

2015-2020 BMW 4 Series: EPA combined rating and yearly fuel cost for each model year
Model yearPowertrainsCombined$/yrEPA ratings
2020 Gas 21–27 MPG $2,970–$3,750 Ratings changed
2019 Gas 21–27 MPG $2,930–$3,750 Ratings changed
2018 Gas 23–27 MPG $2,930–$3,550 Ratings changed
2017 Gas 23–27 MPG $2,940–$3,550 Ratings changed
2016 Gas 22–27 MPG $2,990–$3,600 Ratings changed
2015 Gas 23–27 MPG $2,980–$3,560 First year

What the 2020 430i Convertible 2.0L 4-cyl turbo RWD costs to drive

Per month

$248

$2,970 a year ÷ 12

Per 25 miles

$4.95

Per 100 miles

$19.80

Five years

$14,850

5 × the yearly cost, prices held at today's level

vs the small car median

$260less a year

Class median $3,230 a year, MY2020

Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).

2020 BMW 4 Series MPG

Versus 2019: The most efficient configuration stays at 27 MPG. Its annual cost goes from $2,930 to $2,970, $40 more.

Gas · 2.0L, 3.0L
Combined
21–27 MPG
Per year
$2,970–$3,750

Gas configurations (15)

2020 BMW 4 Series gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
430i Convertible (Most efficient) 2.0L 4-cyl turbo RWD 23 34 27 $2,970
430i Coupe 2.0L 4-cyl turbo RWD Automatic (S8) 2.0L 4-cyl turbo RWD 23 34 27 $2,970
430i Gran Coupe 2.0L 4-cyl turbo RWD 23 34 27 $2,970
430i xDrive Convertible 2.0L 4-cyl turbo AWD 22 32 26 $3,130
430i Coupe 2.0L 4-cyl turbo RWD Manual 6-spd 2.0L 4-cyl turbo RWD 21 33 25 $3,170
440i Coupe 3.0L 6-cyl turbo RWD Automatic (S8) 3.0L 6-cyl turbo RWD 22 30 25 $3,220
440i Gran Coupe 3.0L 6-cyl turbo RWD 22 30 25 $3,220
440i xDrive Coupe 3.0L 6-cyl turbo AWD Automatic (S8) 3.0L 6-cyl turbo AWD 22 30 25 $3,230
440i xDrive Gran Coupe 3.0L 6-cyl turbo AWD 22 30 25 $3,230
440i Convertible 3.0L 6-cyl turbo RWD 22 29 24 $3,280
Show 5 more configurations
2020 BMW 4 Series gas configurations: EPA ratings and annual cost (+5)
TrimEngineDriveCityHwyComb.$/yr
430i xDrive Coupe2.0L 4-cyl turboAWD213124$3,290
430i xDrive Gran Coupe2.0L 4-cyl turboAWD213124$3,290
440i xDrive Convertible3.0L 6-cyl turboAWD202823$3,570
440i Coupe 3.0L 6-cyl turbo RWD Manual 6-spd3.0L 6-cyl turboRWD192722$3,710
440i xDrive Coupe 3.0L 6-cyl turbo AWD Manual 6-spd3.0L 6-cyl turboAWD182821$3,750

15 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2019 BMW 4 Series MPG

21–27 MPG · $2,930–$3,750/yr

Versus 2018: The most efficient configuration stays at 27 MPG. Its annual cost stays at $2,930.

Gas · 2.0L, 3.0L
Combined
21–27 MPG
Per year
$2,930–$3,750

Gas configurations (15)

2019 BMW 4 Series gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
430i Convertible (Most efficient) 2.0L 4-cyl turbo RWD 24 34 27 $2,930
430i Coupe 2.0L 4-cyl turbo RWD Automatic (S8) 2.0L 4-cyl turbo RWD 24 34 27 $2,930
430i Gran Coupe 2.0L 4-cyl turbo RWD 24 34 27 $2,930
430i xDrive Coupe 2.0L 4-cyl turbo AWD 23 33 27 $3,000
430i xDrive Gran Coupe 2.0L 4-cyl turbo AWD 23 33 27 $3,000
430i xDrive Convertible 2.0L 4-cyl turbo AWD 22 32 26 $3,130
Show 5 more configurations
2019 BMW 4 Series gas configurations: EPA ratings and annual cost (+9)
TrimEngineDriveCityHwyComb.$/yr
430i Coupe 2.0L 4-cyl turbo RWD Manual 6-spd2.0L 4-cyl turboRWD213325$3,170
440i Coupe 3.0L 6-cyl turbo RWD Automatic (S8)3.0L 6-cyl turboRWD213225$3,200
440i Gran Coupe3.0L 6-cyl turboRWD213225$3,200
440i xDrive Coupe 3.0L 6-cyl turbo AWD Automatic (S8)3.0L 6-cyl turboAWD213124$3,320
440i xDrive Gran Coupe3.0L 6-cyl turboAWD213124$3,320
440i Convertible3.0L 6-cyl turboRWD212924$3,370
440i xDrive Convertible3.0L 6-cyl turboAWD202923$3,480
440i Coupe 3.0L 6-cyl turbo RWD Manual 6-spd3.0L 6-cyl turboRWD182822$3,680
440i xDrive Coupe 3.0L 6-cyl turbo AWD Manual 6-spd3.0L 6-cyl turboAWD182821$3,750

15 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2018 BMW 4 Series MPG

23–27 MPG · $2,930–$3,550/yr

Versus 2017: The most efficient configuration stays at 27 MPG. Its annual cost goes from $2,940 to $2,930, $10 less.

Gas · 2.0L, 3.0L
Combined
23–27 MPG
Per year
$2,930–$3,550

Gas configurations (15)

2018 BMW 4 Series gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
430i Convertible (Most efficient) 2.0L 4-cyl turbo RWD 24 34 27 $2,930
430i Coupe 2.0L 4-cyl turbo RWD Automatic (S8) 2.0L 4-cyl turbo RWD 24 34 27 $2,930
430i Gran Coupe 2.0L 4-cyl turbo RWD 24 34 27 $2,930
430i xDrive Coupe 2.0L 4-cyl turbo AWD 23 33 27 $3,020
430i xDrive Gran Coupe 2.0L 4-cyl turbo AWD 23 33 27 $3,020
430i xDrive Convertible 2.0L 4-cyl turbo AWD 22 32 26 $3,110
Show 5 more configurations
2018 BMW 4 Series gas configurations: EPA ratings and annual cost (+9)
TrimEngineDriveCityHwyComb.$/yr
430i Coupe 2.0L 4-cyl turbo RWD Manual 6-spd2.0L 4-cyl turboRWD213325$3,170
440i Coupe 3.0L 6-cyl turbo RWD Automatic (S8)3.0L 6-cyl turboRWD213225$3,190
440i Gran Coupe3.0L 6-cyl turboRWD213225$3,190
440i xDrive Coupe 3.0L 6-cyl turbo AWD Automatic (S8)3.0L 6-cyl turboAWD213125$3,240
440i xDrive Gran Coupe3.0L 6-cyl turboAWD213125$3,240
440i Convertible3.0L 6-cyl turboRWD212924$3,370
440i xDrive Convertible3.0L 6-cyl turboAWD202923$3,470
440i Coupe 3.0L 6-cyl turbo RWD Manual 6-spd3.0L 6-cyl turboRWD192923$3,530
440i xDrive Coupe 3.0L 6-cyl turbo AWD Manual 6-spd3.0L 6-cyl turboAWD192923$3,550

15 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2017 BMW 4 Series MPG

23–27 MPG · $2,940–$3,550/yr

Versus 2016: The most efficient configuration stays at 27 MPG. Its annual cost goes from $2,990 to $2,940, $50 less.

Gas · 2.0L, 3.0L
Combined
23–27 MPG
Per year
$2,940–$3,550

Gas configurations (15)

2017 BMW 4 Series gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
430i Convertible (Most efficient) 2.0L 4-cyl turbo RWD 23 34 27 $2,940
430i Coupe 2.0L 4-cyl turbo RWD Automatic (S8) 2.0L 4-cyl turbo RWD 23 34 27 $2,940
430i Gran Coupe 2.0L 4-cyl turbo RWD 23 34 27 $2,940
430i xDrive Coupe 2.0L 4-cyl turbo AWD 23 33 26 $3,040
430i xDrive Gran Coupe 2.0L 4-cyl turbo AWD 23 33 26 $3,040
430i xDrive Convertible 2.0L 4-cyl turbo AWD 22 32 26 $3,120
Show 5 more configurations
2017 BMW 4 Series gas configurations: EPA ratings and annual cost (+9)
TrimEngineDriveCityHwyComb.$/yr
430i Coupe 2.0L 4-cyl turbo RWD Manual 6-spd2.0L 4-cyl turboRWD213325$3,170
440i Coupe 3.0L 6-cyl turbo RWD Automatic (S8)3.0L 6-cyl turboRWD213225$3,210
440i Gran Coupe3.0L 6-cyl turboRWD213225$3,210
440i xDrive Coupe 3.0L 6-cyl turbo AWD Automatic (S8)3.0L 6-cyl turboAWD213125$3,240
440i xDrive Gran Coupe3.0L 6-cyl turboAWD213125$3,240
440i Convertible3.0L 6-cyl turboRWD212924$3,380
440i xDrive Convertible3.0L 6-cyl turboAWD203024$3,390
440i Coupe 3.0L 6-cyl turbo RWD Manual 6-spd3.0L 6-cyl turboRWD192923$3,550
440i xDrive Coupe 3.0L 6-cyl turbo AWD Manual 6-spd3.0L 6-cyl turboAWD192923$3,550

15 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2016 BMW 4 Series MPG

22–27 MPG · $2,990–$3,600/yr

Versus 2015: The most efficient configuration stays at 27 MPG. Its annual cost goes from $2,980 to $2,990, $10 more.

Gas · 2.0L, 3.0L
Combined
22–27 MPG
Per year
$2,990–$3,600

Gas configurations (15)

2016 BMW 4 Series gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
428i Coupe 2.0L 4-cyl turbo RWD Automatic (S8) (Most efficient) 2.0L 4-cyl turbo RWD 23 35 27 $2,990
428i Convertible 2.0L 4-cyl turbo RWD 23 34 27 $3,030
428i Gran Coupe 2.0L 4-cyl turbo RWD 23 34 27 $3,030
428i Coupe 2.0L 4-cyl turbo RWD Manual 6-spd 2.0L 4-cyl turbo RWD 22 33 26 $3,070
428i xDrive Coupe 2.0L 4-cyl turbo AWD 22 33 26 $3,080
428i xDrive Gran Coupe 2.0L 4-cyl turbo AWD 22 33 26 $3,080
Show 5 more configurations
2016 BMW 4 Series gas configurations: EPA ratings and annual cost (+9)
TrimEngineDriveCityHwyComb.$/yr
428i xDrive Convertible2.0L 4-cyl turboAWD213225$3,210
435i Coupe 3.0L 6-cyl turbo RWD Automatic (S8)3.0L 6-cyl turboRWD203024$3,370
435i Gran Coupe3.0L 6-cyl turboRWD203024$3,370
435i Convertible3.0L 6-cyl turboRWD203023$3,430
435i xDrive Coupe 3.0L 6-cyl turbo AWD Automatic (S8)3.0L 6-cyl turboAWD203023$3,450
435i xDrive Gran Coupe3.0L 6-cyl turboAWD203023$3,450
435i Coupe 3.0L 6-cyl turbo RWD Manual 6-spd3.0L 6-cyl turboRWD202923$3,470
435i xDrive Convertible3.0L 6-cyl turboAWD202923$3,490
435i xDrive Coupe 3.0L 6-cyl turbo AWD Manual 6-spd3.0L 6-cyl turboAWD192822$3,600

15 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2015 BMW 4 Series MPG

23–27 MPG · $2,980–$3,560/yr
Gas · 2.0L, 3.0L
Combined
23–27 MPG
Per year
$2,980–$3,560

Gas configurations (15)

2015 BMW 4 Series gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
428i Coupe 2.0L 4-cyl turbo RWD Automatic (S8) (Most efficient) 2.0L 4-cyl turbo RWD 23 34 27 $2,980
428i Convertible 2.0L 4-cyl turbo RWD 23 33 26 $3,050
428i Gran Coupe 2.0L 4-cyl turbo RWD 23 33 26 $3,050
428i xDrive Coupe 2.0L 4-cyl turbo AWD 22 32 26 $3,100
428i Coupe 2.0L 4-cyl turbo RWD Manual 6-spd 2.0L 4-cyl turbo RWD 22 33 26 $3,110
428i xDrive Gran Coupe 2.0L 4-cyl turbo AWD 22 32 26 $3,150
Show 5 more configurations
2015 BMW 4 Series gas configurations: EPA ratings and annual cost (+9)
TrimEngineDriveCityHwyComb.$/yr
428i xDrive Convertible2.0L 4-cyl turboAWD213225$3,220
435i Gran Coupe3.0L 6-cyl turboRWD213125$3,260
435i Coupe 3.0L 6-cyl turbo RWD Automatic (S8)3.0L 6-cyl turboRWD213125$3,260
435i xDrive Gran Coupe3.0L 6-cyl turboAWD203024$3,410
435i Convertible3.0L 6-cyl turboRWD203024$3,410
435i Coupe 3.0L 6-cyl turbo RWD Manual 6-spd3.0L 6-cyl turboRWD202924$3,410
435i xDrive Coupe 3.0L 6-cyl turbo AWD Automatic (S8)3.0L 6-cyl turboAWD203023$3,420
435i xDrive Convertible3.0L 6-cyl turboAWD202923$3,500
435i xDrive Coupe 3.0L 6-cyl turbo AWD Manual 6-spd3.0L 6-cyl turboAWD202823$3,560

15 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Fuel cost by state

Yearly cost of the 430i Convertible 2.0L 4-cyl turbo RWD: $3,540 in California and $2,570 in Texas, a $970 difference.

Gasoline prices: California: California state average; Washington: Washington state average; New York: New York state average; Florida: Florida state average; Texas: Texas state average (Sep 2026).
Fuel cost in every state

Similar cars

Closest combined MPG among MY2020 small car models.

EPA ratings: fueleconomy.gov file of Sep 29, 2026 · Prices: EIA regular gasoline, U.S. average, Sep 2026 ($4.36/gal) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Generations

Frequently asked questions

What gas mileage does the 2015-2020 BMW 4 Series get?

EPA rates the 2015-2020 BMW 4 Series at 21–27 MPG combined across 90 configurations and 6 model years. The most efficient version, the 2020 430i Convertible 2.0L 4-cyl turbo RWD, is rated 27 MPG (23 city, 34 highway).

Which years had the best MPG in the 2015-2020 BMW 4 Series?

Every model year of the 2015-2020 BMW 4 Series tops out at 27 MPG combined, so no year is better than another.

Did EPA ratings change during the 2015-2020 BMW 4 Series?

Yes. Ratings changed in 2016, 2017, 2018, 2019 and 2020.

How does the 2015-2020 BMW 4 Series compare with the previous generation?

The previous generation (2014 BMW 4 Series) is rated 23–27 MPG combined and costs $2,990–$3,540 a year to fuel; the 2015-2020 model is rated 21–27 MPG and costs $2,930–$3,750 a year.

How much does it cost to fuel a 2020 BMW 4 Series per year?

Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the 430i Convertible 2.0L 4-cyl turbo RWD costs about $2,970 a year. Across all 15 configurations the cost runs $2,970–$3,750 a year. That is a $780 difference between the cheapest and the costliest configuration.

How much does it cost to drive a 2020 BMW 4 Series 100 miles?

About $19.80 per 100 miles for the 430i Convertible 2.0L 4-cyl turbo RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $19.80 and $25.00 across all configurations. That is the annual cost over 15,000 miles divided by 150.

Is the 2020 BMW 4 Series more efficient in the city or on the highway?

The 430i Convertible 2.0L 4-cyl turbo RWD is rated 23 city and 34 highway MPG, so it is more efficient on the highway, by 11 MPG.

How does the 2020 BMW 4 Series compare with other small car configurations?

The 430i Convertible 2.0L 4-cyl turbo RWD costs about $2,970 a year to fuel, $260 less than the class median of $3,230, and less than 6 of 10 small car configurations. The comparison covers all 314 rated small car configurations for MY2020, not weighted by sales.

Is the 2020 BMW 4 Series different from the 2019 model?

The most efficient configuration stays at 27 MPG. Its annual cost goes from $2,930 to $2,970, $40 more. EPA lists 15 configurations for 2020 against 15 configurations for 2019. See the 2019 BMW 4 Series for that year.