Used Mercedes-Benz EQS: battery health, range and replacement cost

Battery wear, range, winter loss, replacement cost and warranty, with a source for every figure. Data checked 2026-10-18.

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Things to check

US recall 23V-309 (2022-2023 EQS): the battery monitoring software may not warn of a battery fault. Software update. Check it was done. api.nhtsa.gov
The high-voltage battery monitoring system software may not alert the driver of a battery malfunction.
UK recall R/2024/257: 127 EQSs built February 2023 to April 2024 need a battery management software update, because the high-voltage system can shut down while driving. check-vehicle-recalls.service.gov.uk
the software of the battery management system might lead to a shutdown of the high voltage system
This page covers the first EQS battery (107.8 kWh usable). From the 2025 US model year (UK: 2024) the EQS has a bigger 118 kWh battery. chargedevs.com
There will be two battery pack options: 107.8 kWh usable (12 modules) and 90 kWh usable (10 modules).
US recall 24V-372: on 2023-2025 EQS SUVs (and 2024 EQS sedans) the battery management software can shut the battery down, causing sudden loss of drive power. Software update. Check it was done. api.nhtsa.gov
The battery management system software may cause the high-voltage battery to shut down

In the US

EQS 450+ sedan (2022)

Model years 2022

Battery type: NMCsourcedCharged EVs: Mercedes unveils the EQS · checked 2026-10-17
What the source covers
Mercedes EQS battery (107.8 kWh usable), NCM 811
Quote: The cells are in either pouch or hard-case/prismatic format, and are based on an NCM 811 chemistry.
Usable battery: 107.8 kWhdata setOpen EV Data @32d7dc59e7 (MIT, https://github.com/KilowattApp/open-ev-data) · checked 2026-10-18
What the source covers
Open EV Data entry: Mercedes EQS 450+ (2021); market not stated in the dataset
Record: id=045fc120-bfb5-7dd7-04fa-f21456f0730a usable_battery_size=107.8
Official range (EPA, new): 350 midata setEPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
What the source covers
EPA record 44785: 2022 Mercedes-Benz EQS 450 Plus
Record: id=44785 range=350
Efficiency (EPA combined): 35 kWh per 100 milesdata setEPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
What the source covers
EPA record 44785: 2022 Mercedes-Benz EQS 450 Plus
Record: id=44785 combE=35
Battery wear: 2.3% a yearestimatemeasures battery capacityGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: No yearly EQS degradation figure found. Geotab's fleet average (2.3%/yr across 21 make-models) is used.
Expected health: 89% after 5 years, 77% after 10 yearsestimatestraight-line from the wear rate above; about 310 mi and 270 mi of EPA rangeGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: Our calculation: 100% minus 2.3% a year (the wear rate above), never below 50%.
Winter range loss: 22% lessestimate32°F (0°C) vs best range, compared with the range at an ideal temperatureRecurrent winter range study (2025/26) · checked 2026-10-17
What the source covers
Recurrent average across 34 EV models (not EQS-specific)
Quote: At 32F, on average, EVs retain 78% of their maximum range.
How we got this: No checkable EQS winter figure found (NAF's EQS result is not in the page text), so Recurrent's average across 34 models is used: 100 - 78 = 22%.
Battery replacement cost: No reliable figure yet
Battery warranty: 10 years or 155,000 milesestimatefrom new; covers defects; no capacity level stated; transfer not statedTrueCar: 2022 Mercedes-Benz EQS sedan · checked 2026-10-17
What the source covers
US EQS battery warranty (third-party summary); capacity floor and transfer not stated
Quote: Battery Warranty 10 years / 155k miles
How we got this: Mercedes' own US booklet was not found; TrueCar's summary is used.

EQS 580 4MATIC sedan (2022)

Model years 2022

Battery type: NMCsourcedCharged EVs: Mercedes unveils the EQS · checked 2026-10-17
What the source covers
Mercedes EQS battery (107.8 kWh usable), NCM 811
Quote: The cells are in either pouch or hard-case/prismatic format, and are based on an NCM 811 chemistry.
Usable battery: 107.8 kWhdata setOpen EV Data @32d7dc59e7 (MIT, https://github.com/KilowattApp/open-ev-data) · checked 2026-10-18
What the source covers
Open EV Data entry: Mercedes EQS 580 4MATIC (2021); market not stated in the dataset
Record: id=7d0d2ee9-c319-59c4-772e-53cd41a475d2 usable_battery_size=107.8
Official range (EPA, new): 340 midata setEPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
What the source covers
EPA record 45023: 2022 Mercedes-Benz EQS 580 4matic
Record: id=45023 range=340
Efficiency (EPA combined): 35.5 kWh per 100 milesdata setEPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
What the source covers
EPA record 45023: 2022 Mercedes-Benz EQS 580 4matic
Record: id=45023 combE=35.5155
Battery wear: 2.3% a yearestimatemeasures battery capacityGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: No yearly EQS degradation figure found. Geotab's fleet average (2.3%/yr across 21 make-models) is used.
Expected health: 89% after 5 years, 77% after 10 yearsestimatestraight-line from the wear rate above; about 301 mi and 262 mi of EPA rangeGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: Our calculation: 100% minus 2.3% a year (the wear rate above), never below 50%.
Winter range loss: 22% lessestimate32°F (0°C) vs best range, compared with the range at an ideal temperatureRecurrent winter range study (2025/26) · checked 2026-10-17
What the source covers
Recurrent average across 34 EV models (not EQS-specific)
Quote: At 32F, on average, EVs retain 78% of their maximum range.
How we got this: No checkable EQS winter figure found (NAF's EQS result is not in the page text), so Recurrent's average across 34 models is used: 100 - 78 = 22%.
Battery replacement cost: No reliable figure yet
Battery warranty: 10 years or 155,000 milesestimatefrom new; covers defects; no capacity level stated; transfer not statedTrueCar: 2022 Mercedes-Benz EQS sedan · checked 2026-10-17
What the source covers
US EQS battery warranty (third-party summary); capacity floor and transfer not stated
Quote: Battery Warranty 10 years / 155k miles
How we got this: Mercedes' own US booklet was not found; TrueCar's summary is used.

EQS SUV 450 4MATIC (2023)

Model years 2023

Battery type: NMCestimateCharged EVs: Mercedes unveils the EQS · checked 2026-10-17
What the source covers
Mercedes EQS battery (107.8 kWh usable), NCM 811
Quote: The cells are in either pouch or hard-case/prismatic format, and are based on an NCM 811 chemistry.
How we got this: The source is about the EQS sedan; the EQS SUV uses the same 107.8 kWh pack.
Usable battery: 107.8 kWhdata setOpen EV Data @32d7dc59e7 (MIT, https://github.com/KilowattApp/open-ev-data) · checked 2026-10-18
What the source covers
Open EV Data entry: Mercedes EQS SUV 450 4MATIC (2022); market not stated in the dataset
Record: id=283e5f3c-1397-d7c6-2c2a-cb0f83536b0d usable_battery_size=107.8
Official range (EPA, new): 285 midata setEPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
What the source covers
EPA record 46010: 2023 Mercedes-Benz EQS 450 4matic (SUV)
Record: id=46010 range=285
Efficiency (EPA combined): 42.6 kWh per 100 milesdata setEPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
What the source covers
EPA record 46010: 2023 Mercedes-Benz EQS 450 4matic (SUV)
Record: id=46010 combE=42.6052
Battery wear: 2.3% a yearestimatemeasures battery capacityGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: No yearly EQS degradation figure found. Geotab's fleet average (2.3%/yr across 21 make-models) is used.
Expected health: 89% after 5 years, 77% after 10 yearsestimatestraight-line from the wear rate above; about 252 mi and 219 mi of EPA rangeGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: Our calculation: 100% minus 2.3% a year (the wear rate above), never below 50%.
Winter range loss: 22% lessestimate32°F (0°C) vs best range, compared with the range at an ideal temperatureRecurrent winter range study (2025/26) · checked 2026-10-17
What the source covers
Recurrent average across 34 EV models (not EQS-specific)
Quote: At 32F, on average, EVs retain 78% of their maximum range.
How we got this: No checkable EQS winter figure found (NAF's EQS result is not in the page text), so Recurrent's average across 34 models is used: 100 - 78 = 22%.
Battery replacement cost: No reliable figure yet
Battery warranty: 10 years or 155,000 milesestimatefrom new; covers defects; no capacity level stated; transfer not statedTrueCar: 2022 Mercedes-Benz EQS sedan · checked 2026-10-17
What the source covers
US EQS battery warranty (third-party summary); capacity floor and transfer not stated
Quote: Battery Warranty 10 years / 155k miles
How we got this: TrueCar's summary is for the 2022 EQS sedan; the 2023 EQS SUV is assumed to have the same terms.

In the UK

EQS 450+ sedan

Model years 2021–2023

Battery type: NMCsourcedEV Database: Mercedes EQS 450+ (UK) · checked 2026-10-17
What the source covers
UK Mercedes EQS 450+, 107.8 kWh usable
Quote: Cathode Material NMC811
Usable battery: 107.8 kWhdata setOpen EV Data @32d7dc59e7 (MIT, https://github.com/KilowattApp/open-ev-data) · checked 2026-10-18
What the source covers
Open EV Data entry: Mercedes EQS 450+ (2021); market not stated in the dataset
Record: id=045fc120-bfb5-7dd7-04fa-f21456f0730a usable_battery_size=107.8
Official range (WLTP, new): 388 misourcedParkers: Mercedes-Benz EQS 450+ AMG Line specifications · checked 2026-10-17
What the source covers
UK EQS 450+ AMG Line (107.8 kWh) WLTP 388-487 miles; the lowest is shown
Quote: Electric range 388 - 487 miles
Battery wear: 2.3% a yearestimatemeasures battery capacityGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: No yearly EQS degradation figure found. Geotab's fleet average (2.3%/yr across 21 make-models) is used.
Expected health: 89% after 5 years, 77% after 10 yearsestimatestraight-line from the wear rate above; about 343 mi and 299 mi of WLTP rangeGeotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
What the source covers
Geotab fleet average (not EQS-specific)
How we got this: Our calculation: 100% minus 2.3% a year (the wear rate above), never below 50%.
Winter range loss: 22% lessestimate32°F (0°C) vs best range, compared with the range at an ideal temperatureRecurrent winter range study (2025/26) · checked 2026-10-17
What the source covers
Recurrent average across 34 EV models (not EQS-specific)
Quote: At 32F, on average, EVs retain 78% of their maximum range.
How we got this: No checkable EQS winter figure found (NAF's EQS result is not in the page text), so Recurrent's average across 34 models is used: 100 - 78 = 22%.
Battery replacement cost: No reliable figure yet
Battery warranty: 10 years or 155,000 milesestimatefrom new; covers defects; no capacity level stated; transfer not statedParkers: Mercedes-Benz EQS running costs · checked 2026-10-17
What the source covers
UK EQS battery warranty (press summary); capacity floor and transfer not stated
Quote: The battery is covered by a 10-year warranty, but this is limited to 155,000 miles.
How we got this: Mercedes UK's own terms were not found; Parkers' summary is used.

All sources for this page

api.nhtsa.gov · checked 2026-10-18
api.nhtsa.gov · checked 2026-10-18
Charged EVs: Mercedes unveils the EQS · checked 2026-10-17
chargedevs.com · checked 2026-10-18
check-vehicle-recalls.service.gov.uk · checked 2026-10-18
EPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
EPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
EPA/DOE fueleconomy.gov vehicles.csv (retrieved 2026-10-17, sha256 b1ff0e3071c4) · checked 2026-10-18
EV Database: Mercedes EQS 450+ (UK) · checked 2026-10-17
Geotab EV battery health study (page labels it 2025/2026) · checked 2026-10-17
Open EV Data @32d7dc59e7 (MIT, https://github.com/KilowattApp/open-ev-data) · checked 2026-10-18
Parkers: Mercedes-Benz EQS 450+ AMG Line specifications · checked 2026-10-17
Parkers: Mercedes-Benz EQS running costs · checked 2026-10-17
Recurrent winter range study (2025/26) · checked 2026-10-17
TrueCar: 2022 Mercedes-Benz EQS sedan · checked 2026-10-17

"Estimate" means we worked the figure out or borrowed it from a similar car; open "What the source covers" to see how. Expected health is a straight-line estimate from fleet data, not a test of any one car.