1999 Oldsmobile Alero: MPG and fuel economy

This page collects every fuel-economy figure the EPA publishes for the 1999 Oldsmobile Alero. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. The EPA rates 2 separate variants of this car (different engine, transmission, or drivetrain combinations), and you can compare them side by side in the trims table. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.

Fuel economy at a glance

These are the EPA's official ratings for the 1999 Oldsmobile Alero. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.

When the EPA tests several variants of the same nameplate (for example, a front-wheel-drive version and an all-wheel-drive version), each gets its own rating. The figures shown here are the headline variant, taken as the configuration with the best combined MPG. The trims table further down covers all 2 variants side by side.

Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).

How the 1999 Oldsmobile Alero compares

The 1999 Oldsmobile Alero returns 23 combined MPG, which is right around the 22.9 MPG class average for cars in the Compact Cars class for the same model year.

The most efficient car in the Compact Cars class for the 1999 model year is the Honda EV Plus at 48 MPG. The bar chart below puts the Oldsmobile Alero alongside the class best and the class average so you can see the full picture.

For broader context, the average new car of the 1999 model year (across all classes) returns 19.1 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 1999 model year is on its own page.

Trim variants rated for 1999

The EPA rates 2 separate variants of the 1999 Oldsmobile Alero. The differences come from the engine size, transmission type, and drivetrain (front-wheel drive, all-wheel drive, and so on). The same nameplate can land several MPG apart depending on the configuration you actually buy.

Annual fuel cost across driving patterns

The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for regular gasoline, which is $3.99/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.

The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 652.2 gallons (the car's annual consumption at the rated MPG).

Year-over-year MPG for the Oldsmobile Alero

The EPA has rated the Oldsmobile Alero across 6 model years, from 1999 Oldsmobile Alero through 2004 Oldsmobile Alero. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.

Combined MPG has stayed in roughly the same range across the run, hovering close to 27 MPG.

Compare against other Compact Cars for 1999

If you are cross-shopping the 1999 Oldsmobile Alero, the most useful comparison is against the other cars in the Compact Cars class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.

The Honda EV Plus leads this group at 48 MPG, 25 MPG ahead of the 1999 Oldsmobile Alero.

Specifications

The 1999 Oldsmobile Alero runs a 2.4-liter 4-cylinder engine paired with a automatic 4-spd, sending power through front-wheel drive.

Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.

Vehicle class

Compact Cars

Engine

2.4L 4-cylinder

Transmission

Automatic 4-spd

Drivetrain

Front-Wheel Drive

Fuel type

Regular

Annual petroleum use

12.9 barrels per year

Common questions about the 1999 Oldsmobile Alero

Quick answers to the questions people most often search for when looking up the 1999 Oldsmobile Alero.

• Is the 1999 Oldsmobile Alero fuel efficient?

  It is in line with the rest of the class. The 1999 Oldsmobile Alero returns 23 combined MPG, and the average car in the Compact Cars class for the same model year sits at 22.9 MPG.
• What MPG does the 1999 Oldsmobile Alero get?

  The EPA rates the 1999 Oldsmobile Alero at 23 combined MPG, 19 MPG in city driving, and 28 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is.
• How much does it cost to fuel a 1999 Oldsmobile Alero per year?

  The EPA estimates an annual fuel cost of $2,600 for the 1999 Oldsmobile Alero. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade.
• What fuel does the 1999 Oldsmobile Alero use?

  The EPA lists the 1999 Oldsmobile Alero as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity.
• Has the Oldsmobile Alero become more fuel efficient over time?

  Combined MPG has stayed close to flat across the run. Both the earliest (1999 Oldsmobile Alero, 23 MPG) and most recent (2004 Oldsmobile Alero, 27 MPG) versions sit in the same range.
• How much CO₂ does the 1999 Oldsmobile Alero emit?

  Tailpipe CO₂ emissions are 386 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 5,796 kilograms of CO₂.
• What is the difference between the city and highway MPG of the 1999 Oldsmobile Alero?

  City driving returns 19 MPG and highway driving returns 28 MPG, a gap of 9 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise.
• What engine is in the 1999 Oldsmobile Alero?

  The 1999 Oldsmobile Alero has a 2.4-liter 4-cylinder engine.
• What transmission and drivetrain does the 1999 Oldsmobile Alero have?

  The 1999 Oldsmobile Alero comes with a automatic 4-spd transmission and front-wheel drive.
• How does the 1999 Oldsmobile Alero compare to the best car in its class?

  The most efficient car in the Compact Cars class for the 1999 model year is the Honda EV Plus at 48 combined MPG. The Oldsmobile Alero returns 23 MPG, a gap of 25 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.

Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.