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Mercedes-Benz E-Class
2021 · gas
5 measured figures
5 of the 9 figures this market publishes for a car like this one are measured for this car. This market publishes no overall score, so there is no share of a composite weight to measure confidence against; figures_measured says how many of this market's figures the row carries, and contributing_publishers says who measured them

Measured figures

Fuel economy25.6 mpg (US gallons)Measured by NRCan · configuration: E 450 4MATIC Sedan · also 9.2 L/100 km
Tailpipe CO₂217 g/kmMeasured by NRCan · CO₂ basis: tailpipe_rated · configuration: E 450 4MATIC Sedan · also 349 g/mile
HorsepowerFree with an accountMeasured for this car, with its publisher and basis
WarrantyFree with an accountMeasured for this car, with its publisher and basis
Recall campaignsFree with an accountMeasured for this car, with its publisher and basis

3 more measured figures for this car — Horsepower, Warranty, Recall campaigns — each with the publisher that measured it and the basis it is on. Free to read with an account.

Figures this car does not carry

Fuel economy (MPGe)Not published for this carFuel economy (MPGe) is published for electric and hydrogen cars, whose economy is published as MPGe: energy converted at 33.7 kWh per gallon, not fuel burned; this car is not one of them, so the figure is not the same quantity for it
Tailpipe CO₂ (charge-weighted)Not published for this carthis car's CO₂ is published as the tailpipe rating for the car driven as rated on the test cycle (217 g/km), not as a composite weighted across electric and fuel-burning miles, so it is not the quantity this list orders. It is published as Tailpipe CO₂
Engine horsepowerNot published for this carNot published for this car. The record's own reason is free to read with an account.
Kerb weightNot published for this carNot published for this car. The record's own reason is free to read with an account.
EPA test weightNot published for this carNot published for this car. The record's own reason is free to read with an account.
NHTSA overall ratingNot published for this carNot published for this car. The record's own reason is free to read with an account.
Complaints per 10,000 builtNot published for this carNot published for this car. The record's own reason is free to read with an account.
PriceNot published for this carNot published for this car. The record's own reason is free to read with an account.

5-Year Running Costs

FuelUS$8,754
InsuranceUS$7,150 (modelled)
MaintenanceUS$7,800 (class estimate)
RepairsUS$8,000 (modelled)
Depreciationnot estimated — we hold no purchase price for this car, and it is not assumed.
Totalnot estimated — a component above is unknown or modelled

Running costs only — the purchase price is not included. The five-year running cost is an ESTIMATE, not a measurement of this car: only its fuel half is computed from the car's own measured consumption and a dated pump price (see fuel_price_source and fuel_price_as_of in the market's own figures); insurance, maintenance and repairs are class models. It orders no list and is not one of this market's published figures. Fuel is this car's own combined consumption over 15,000 km a year at 1.738 CAD a litre of petrol (Statistics Canada. Table 18-10-0001-01 Monthly average retail prices for gasoline and fuel oil, by geography; Canada; regular unleaded gasoline at self service filling stations, 2026-08). Adapted from Statistics Canada, Table 18-10-0001-01 Monthly average retail prices for gasoline and fuel oil, by geography, August 2026. This does not constitute an endorsement by Statistics Canada of this product. Costs are in US dollars; the CAD pump price is converted at 1 CAD = 0.73 USD, the rate set on 2026-09-13. Insurance, maintenance and repairs are models, not figures for this car: insurance from its power, weight and crash rating, maintenance from its make's class, repairs from its complaint and recall counts. They are shown for scale and are not used to rank it. Confidence is low: several components are modelled from class averages.

Known Issues

ELECTRICAL SYSTEM
7 complaint(s) · 1 reports a crash, fire, injury or death
48Volt battery failed after three months and just 3,400 miles. I understand this is a recurring problem with Mercedes. Car had to be towed as the vehicle was totally inoperable due to battery malfun…
ENGINE
7 complaint(s) · 1 reports a crash, fire, injury or death
The 48 volt battery on this mild hybrid vehicle failed and the car was unable to be started on May 3, 2021, with 196 miles on the odometer, a mere 15 days after delivery. It had to be taken by flatbe…
POWER TRAIN
4 complaint(s)
The Mercedes E350, with 22,000 miles suffered a catastrophic transmission failure while driving on the highway. I managed to exit the highway but the car could not be moved and left me stranded.
UNKNOWN OR OTHER
4 complaint(s)
The contact owns a 2021 Mercedes-Benz E450. The contact stated that the vehicle speed control was always inadvertently activated, which caused the vehicle to decelerate automatically. The failure near…
BACK OVER PREVENTION: WARNINGS
3 complaint(s)
When in reverse, sometimes the rearview camera image does not come and and the parking sensors do not work. An inoperative rearview camera display and/or parking sensors can reduce the driver’s view…
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
2 complaint(s)
FUEL/PROPULSION SYSTEM
2 complaint(s)
BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
1 complaint(s)
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
1 complaint(s)
TL* THE CONTACT OWNS A 2021 MERCEDES-BENZ E450. THE CONTACT STATED THAT WHILE STATIONARY, THE INSTRUMENT PANEL DISPLAYED A MESSAGE INDICATING THAT THE VEHICLE HAD CRASHED. AFTER THE MESSAGE WAS DISPLA…
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 complaint(s)

The 10 components named in the most complaints are shown, of 15 named in all.

These complaints are filed under AMG E53, E 350, E 450, names that include one NHTSA also uses for other versions of this car, so some may concern those versions.

Data sources