44/100

1985Midsize CarsDiesel

1985 Buick Century

EPA ID: 1330

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City MPG

Combined MPG

27MPG· Average

Highway MPG

Fuel Economy Overview

The 1985 Buick Century achieves an EPA-estimated 27 MPG in combined city and highway driving, with 23 MPG in the city and 32 MPG on the highway. Powered by a 4.3L 6-cylinder engine paired with a automatic 3-spd, this midsize cars features Front-Wheel Drive drive.

In terms of environmental impact, the 1985 Century produces approximately 377 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this Century performs better than the national average in this regard.

The estimated annual fuel cost for this vehicle is $3,000, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $4,250 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.

Energy DNA

Vehicle ClassMidsize Cars

Fuel TypeDiesel

Engine4.3L 6-cyl

AspirationNaturally Aspirated

TransmissionAutomatic 3-spd

Drive TypeFront-Wheel Drive

Green Scorecard

CO2 Emissions377 g/mi

Start-Stop SystemNot Equipped

GHG Score-1/10

Smog RatingN/A

Est. Annual Cost$3,000

5-Year Cost DeltaSave $4,250

Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy

55% City45% Highway

Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.

Your Real MPG

26.3

Impact vs EPA

+$49

/ year

💨

Aerodynamic Speed Penalty

EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.

5-Year Total Cost of Ownership

Estimated Monthly Cost

$579/mo

Includes estimated depreciation, fuel, insurance, and state fees over 5 years. Does not include loan interest.

Annual Mileage15,000 mi

Value Depreciation

Est. value lost over 60 months

$16,000

46.1%

Fuel & Electricity

Based on National Average rates ($3.50/gal)

$9,722

28.0%

Estimated Insurance

Based on vehicle class risk profile

$8,600

24.8%

State Registration Fees

Based on National Average DMV base rates

$400

1.2%

Total 5-Year Cost$34,722

Recall Intelligence

Campaign #06E043000·2006-10-18

critical

Component: FUEL SYSTEM, GASOLINE

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.

Consequence & Remedy

(Based on 200,000 miles driven)

75.4 metric tons CO₂

Equivalent To:

🌳 93 tree seedlings grown for 10 yrs

✈️ 6.3 cross-country flights/yr

Data Provenance

Data directly from the EPA National Vehicle and Fuel Emissions Laboratory. The combined rating is a weighted average (55% city, 45% highway). For official figures, visit fueleconomy.gov.