MPGTerminal
39/100
1999Large CarsRegular

1999 Buick LeSabre

EPA ID: 15176
17
City MPG
21
Combined MPG
21MPG· Average
27
Highway MPG

Fuel Economy Overview

The 1999 Buick LeSabre achieves an EPA-estimated 21 MPG in combined city and highway driving, with 17 MPG in the city and 27 MPG on the highway. Powered by a 3.8L 6-cylinder engine paired with a automatic 4-spd, this large cars features Front-Wheel Drive drive.

In terms of environmental impact, the 1999 LeSabre produces approximately 423 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 LeSabre has higher-than-average emissions in this regard.

The estimated annual fuel cost for this vehicle is $2,850, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $3,500 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 ClassLarge Cars
Fuel TypeRegular
Engine3.8L 6-cyl
AspirationNaturally Aspirated
TransmissionAutomatic 4-spd
Drive TypeFront-Wheel Drive

Green Scorecard

CO2 Emissions423 g/mi
Start-Stop SystemNot Equipped
GHG Score-1/10
Smog RatingN/A
Est. Annual Cost$2,850
5-Year Cost DeltaSave $3,500

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
20.4
Impact vs EPA
+$74
/ 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
$715/mo
Includes estimated depreciation, fuel, insurance, and state fees over 5 years. Does not include loan interest.
15,000 mi
Value Depreciation
Est. value lost over 60 months
$20,000
46.6%
Fuel & Electricity
Based on National Average rates ($3.50/gal)
$12,500
29.1%
Estimated Insurance
Based on vehicle class risk profile
$10,000
23.3%
State Registration Fees
Based on National Average DMV base rates
$400
0.9%
Total 5-Year Cost$42,900

Recall Intelligence

Campaign #04V090000·2004-06-30
critical
Component: FUEL SYSTEM, GASOLINE:DELIVERY

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3800 V6 (L36) ENGINES AND CERTAIN DELPHI FUEL PRESSURE REGULATORS, THE REGULATORS HAVE A MUCH HIGHER THAN USUAL RATE OF FUEL LEAKS. A LEAK CAN ALLOW FUEL TO ENTER THE INTAKE MANIFOLD THROUGH A VACUUM LINE. IF THE ENGINE DOES NOT START WHEN CRANKED, THE FUEL FROM THE LEAKING REGULATOR AND A MISTIMED SPARK CAN CAUSE A BACKFIRE.

Consequence & Remedy

Consequence: THE BACKFIRE CAN RUPTURE THE INTAKE MANIFOLD. THE RUPTURE OF THE INTAKE MANIFOLD CAN DISPLACE A FUEL LINE, PULLING AN INJECTOR OUT OF PLACE, AND CAUSING A FUEL LEAK AND POSSIBLE FIRE.

Remedy: DEALERS WILL INSTALL NEW FUEL PRESSURE REGULATORS WITH IMPROVED DIAPHRAGMS. THE RECALL WILL BE CONDUCTED IN PHASED MAILINGS. PHASE 1 BEGAN ON JUNE 30, 2004, AND PHASE 2 BEGAN ON SEPTEMBER 30, 2004. OWNERS SHOULD CONTACT BUICK AT 1-866-608-8080, OLDSMOBILE AT 1-800-630-6537, OR PONTIAC AT 1-800-620-7668.

Campaign #99V089000·1999-05-25
critical
Component: POWER TRAIN:AUTOMATIC TRANSMISSION

VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH 4T65E AUTOMATIC TRANSMISSIONS. THESE VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FMVSS NO. 102, "TRANSMISSION SHIFT LEVER SEQUENCE." A RETAINING CLIP, WHICH SECURES THE MANUAL VALVE TO THE LINKAGE OF THE TRANSMISSION DETENT LEVER, CAN BECOME LOOSE UNDER A COMBINATION OF POSSIBLE DRIVER SHIFTING MANEUVERS AND ALLOW THE LINK TO BECOME DISCONNECTED FROM THE MANUAL VALVE.

Consequence & Remedy

Consequence: IF THE LINK DISCONNECTS, THE DRIVER'S INDICATED PRNDL STATE MAY DIFFER FROM THE HYDRAULIC STATE OF THE TRANSMISSION. IF THE DRIVER SELECTS 'DRIVE' AND THE TRANSMISSION IS ACTUALLY IN 'REVERSE', A VEHICLE CRASH COULD OCCUR.

Remedy: DEALERS WILL REPLACE THE MANUAL VALVE/LINK ASSEMBLY WITH A REPLACEMENT MANUAL VALVE/LINK KIT, FEATURING A SPRING-TYPE FASTENER.

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Looking for comprehensive historical data?

NHTSA FARS (Fatal Crash History) and broader generational safety trends are aggregated at the model level rather than by specific engine configurations. View the complete historical data profile for all Buick LeSabre configurations.

View Model History

Similar 1999 Large Cars Alternatives

1999 Buick Park Avenue

3.8L 6-cyl Front-Wheel Drive

20MPG
City: 17Hwy: 25$3,000/yr

1999 Chrysler Concorde

2.7L 6-cyl Front-Wheel Drive

22MPG
City: 18Hwy: 28$2,700/yr

1999 Chrysler Concorde

3.2L 6-cyl Front-Wheel Drive

20MPG
City: 17Hwy: 26$3,000/yr

1999 Dodge Intrepid

2.7L 6-cyl Front-Wheel Drive

22MPG
City: 18Hwy: 28$2,700/yr

1999 Oldsmobile Eighty-Eight/Regency

3.8L 6-cyl Front-Wheel Drive

20MPG
City: 17Hwy: 27$3,000/yr

1999 Pontiac Bonneville

3.8L 6-cyl Front-Wheel Drive

20MPG
City: 17Hwy: 25$3,000/yr

Fuel Cost Analysis

Annual Fuel Cost$2,850
vs. Avg Vehicle (5 yrs)Save $3,500

Based on 15,000 miles/year and current fuel prices.

Efficiency Breakdown

City17 MPG
Highway27 MPG
Combined21 MPG

Estimated Lifetime Carbon Footprint

(Based on 200,000 miles driven)

84.6 metric tons CO₂
Equivalent To:
🌳 105 tree seedlings grown for 10 yrs
✈️ 7.1 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.