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2020 Mercedes-Benz CLA-Class Gas Tank Size & Fuel Capacity

Sedan 4 trims listed 1 fuel-system recall ← 2019 2021 →

Fuel tank capacity

13.5gal · 51 L

The 2020 Mercedes-Benz CLA-Class has a fuel tank capacity of 13.5 gallons (51 liters) on every trim.

A full tank is good for roughly 392–473 highway miles or 270–338 miles around town, going by the EPA ratings.

13.5 gal · Smaller than 83% of 2020 models we list.

Highway range
392–473 mi
City range
270–338 mi
Fuel
Premium unleaded (required)
EPA combined
23–28 MPG
EPA size class
Compact Cars

2020 Mercedes-Benz CLA-Class fuel tank capacity by trim

What changes the tank sizeTap an option to filter the table

Drive
no difference
Engine
no difference

All 4 trims

MPG and range are city / highway.

TrimEngineDrive Tank MPG city / hwy Range city / hwy
AMG CLA 35 4dr Sedan AWD 2.0L 4cyl Turbo 7AM · AWD MPG 23 / 29Range 311 / 392 mi 2.0L 4cyl Turbo 7AM AWD 13.5 gal51 L 23 / 29 311 / 392 mi
AMG CLA 45 4dr Sedan AWD 2.0L 4cyl Turbo 8AM · AWD MPG 20 / 29Range 270 / 392 mi 2.0L 4cyl Turbo 8AM AWD 13.5 gal51 L 20 / 29 270 / 392 mi
CLA 250 4MATIC 4dr Sedan AWD 2.0L 4cyl Turbo 7AM · AWD MPG 23 / 33Range 311 / 446 mi 2.0L 4cyl Turbo 7AM AWD 13.5 gal51 L 23 / 33 311 / 446 mi
CLA 250 4dr Sedan 2.0L 4cyl Turbo 7AM · FWD MPG 25 / 35Range 338 / 473 mi 2.0L 4cyl Turbo 7AM FWD 13.5 gal51 L 25 / 35 338 / 473 mi

Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.

How far a 2020 Mercedes-Benz CLA-Class goes on a tank

Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 25 MPG, a full 13.5-gallon tank covers about 338 miles.

GaugeGallonsHighway milesCity miles
Full13.5392311
3/410.1294233
1/26.8196155
1/43.49878
1/81.74939

Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 600 gallons, roughly 44 full tanks.

Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.

EPA combined
23–28 MPG
Tailpipe CO2
310–382 g/mi
EPA greenhouse score
5–6 of 10
Source
EPA ratings

What it costs to fill up a 2020 Mercedes-Benz CLA-Class

$71.28 to fill the 13.5-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.

TankFuelUS avg / galFrom emptyFrom 1/4 tank
13.5 galPremium$5.28$71.28$53.46

By region, 13.5-gallon tank

RegionPremium / galFill from empty
East Coast$4.93$66.55
Midwest$5.37$72.50
Gulf CoastLowest$4.57$61.70
Rocky Mountain$5.12$69.12
West Coast$6.08$82.08
CaliforniaHighest$6.36$85.86

Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.

Your own price

  • 13.5-gallon tank$71.28
  • A year of driving (15,000 mi)$3,168

Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.

CLA-Class tank size in other years

The tank changed for 2020: 13.5 gal, down from 14.8 gal on the 2019 CLA-Class.

Model yearTankLongest highway range
2025 CLA-Class 13.5 gal 486 mi
2024 CLA-Class 13.5 gal 486 mi
2023 CLA-Class 13.5 gal 486 mi
2022 CLA-Class 13.5 gal 486 mi
2021 CLA-Class 13.5 gal 473 mi
2020 CLA-Class 13.5 gal 473 mi
2019 CLA-Class 14.8 gal 548 mi
2018 CLA-Class 14.8 gal 548 mi
2017 CLA-Class 14.8 gal 533 mi
2016 CLA-Class 13.2–14.8 gal 502 mi
2015 CLA-Class 13.1–14.8 gal 498 mi
Mercedes-Benz CLA-Class fuel tank by model yearSmallest tank Larger tank options
201420152016201720182019202020212022202320242025
← 2019 Mercedes-Benz CLA-Class Every CLA-Class year 2021 Mercedes-Benz CLA-Class →

2020 Mercedes-Benz CLA-Class vs similar 2020 sedans

At 13.5 gallons, the CLA-Class's largest tank ranks sixth of the seven 2020 sedans compared here. The Cadillac CT4 carries the most (17.4 gal) and the BMW 2 Series Gran Coupe the least (13.2 gal).

2020 modelTankLongest highway range
Cadillac CT4 17.4 gal 592 mi
Lexus IS 300 17.4 gal 522 mi
Jaguar XE 16.6 gal 564 mi
Genesis G70 15.8 gal 474 mi
Audi A4 15.3 gal 536 mi
Mercedes-Benz CLA-Class 13.5 gal 473 mi
BMW 2 Series Gran Coupe 13.2 gal 436 mi

Other 2020 sedans of a similar size, one model per brand.

2020 Mercedes-Benz CLA-Class fuel system recalls

NHTSA lists 1 fuel-system recall for the 2020 Mercedes-Benz CLA-Class, out of 13 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.

Fuel injection system · Fuel railDec 13, 2021 · NHTSA 21V961000 · Mercedes-Benz USA, LLC · 139 vehicles

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019 AMG G63, C300, E300, G550, AMG GT63, AMG GT53, 2019-2020 A220, GLA250, GLC300, 2016 C300, 2020 AMG A35, AMG C43, AMG C63, CLA250, E350, E450, GLB250, GLE450, GLS450, GLS580, S560, and SL550 vehicles equipped with a gasoline engine. During the manufacturing process, particles may have been trapped between the fuel rail and injectors, which can cause a fuel leak.

Risk and remedy

Risk: A fuel leak in the presence of an ignition source, such as hot engine or exhaust components, can increase the risk of a fire.

Remedy: Dealers will replace the fuel rail and fuel injectors, free of charge. Owner notification letters were mailed April 22, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for the recall is 2022030003.

All Mercedes-Benz fuel recalls Look up your tank by VIN

Frequently asked questions

What is the fuel tank capacity of the 2020 Mercedes-Benz CLA-Class?

The 2020 Mercedes-Benz CLA-Class holds 13.5 gallons (51 liters) on every trim we list.

How many gallons and liters does the 2020 Mercedes-Benz CLA-Class gas tank hold?

The 2020 Mercedes-Benz CLA-Class tank holds 51 liters, or 13.5 gallons in US gallons.

Does AWD change the 2020 Mercedes-Benz CLA-Class gas tank?

No. AWD and FWD versions of the 2020 Mercedes-Benz CLA-Class use the same 13.5 gal tank.

How far can a 2020 Mercedes-Benz CLA-Class go on a full tank?

About 392–473 miles on the highway and 270–338 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.

How many miles can a 2020 Mercedes-Benz CLA-Class go on a quarter tank?

About 98 highway miles or 78 in town from the 13.5-gallon tank, which has roughly 3.4 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.

What gas does the 2020 Mercedes-Benz CLA-Class take?

Premium unleaded (required). The label inside the fuel door confirms it for your car.

How much does it cost to fill up a 2020 Mercedes-Benz CLA-Class?

At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 13.5-gallon tank from empty costs $71.28. It ranges from $61.70 in the Gulf Coast to $85.86 in California.

How much does a full tank of gas weigh in a 2020 Mercedes-Benz CLA-Class?

About 84 pounds for the 13.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.

Does the 2020 Mercedes-Benz CLA-Class have a bigger gas tank than the Jaguar XE?

No. The 2020 Jaguar XE holds up to 16.6 gallons; the 2020 Mercedes-Benz CLA-Class holds up to 13.5.

Has the 2020 Mercedes-Benz CLA-Class had a fuel pump or fuel system recall?

Yes. NHTSA lists 1 fuel-system recall for the 2020 Mercedes-Benz CLA-Class: 21V961000 (fuel injection system · fuel rail). Check your VIN at nhtsa.gov/recalls to see if your car is affected.

Sources

  • Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
  • MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
  • Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
  • Recalls: NHTSA recall database (Mercedes-Benz fuel system recalls).

Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.

Other 2020 Mercedes-Benz models

A-Class13.5 gallons AMG® GT19.8–21.1 gallons C-Class17.4 gallons CLS-Class21.1 gallons E-Class17.4–21.1 gallons G-Class26.4 gallons GLA-Class14.8 gallons GLB-Class15.9 gallons GLC-Class17.4 gallons GLC-Class Coupe17.4 gallons GLE-Class22.5 gallons GLS-Class23.8 gallons