2003 Suzuki Aerio SX 4WD: MPG and fuel economy

This page collects every fuel-economy figure the EPA publishes for the 2003 Suzuki Aerio SX 4WD. 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.

Fuel economy at a glance

These are the EPA's official ratings for the 2003 Suzuki Aerio SX 4WD. 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.

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 2003 Suzuki Aerio SX 4WD compares

The 2003 Suzuki Aerio SX 4WD returns 23 combined MPG. Cars in the Small Station Wagons class for the same model year average 22.3 MPG, which puts this car ahead of the class average by about 3%.

The most efficient car in the Small Station Wagons class for the 2003 model year is the Volkswagen Jetta Wagon at 33 MPG. The bar chart below puts the Suzuki Aerio SX 4WD alongside the class best and the class average so you can see the full picture.

For broader context, the average new car of the 2003 model year (across all classes) returns 18.4 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 2003 model year is on its own page.

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).

Compare against other Small Station Wagons for 2003

If you are cross-shopping the 2003 Suzuki Aerio SX 4WD, the most useful comparison is against the other cars in the Small Station Wagons 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 Volkswagen Jetta Wagon leads this group at 39 MPG, 16 MPG ahead of the 2003 Suzuki Aerio SX 4WD.

Specifications

The 2003 Suzuki Aerio SX 4WD runs a 2-liter 4-cylinder engine paired with a automatic 4-spd, sending power through 4-wheel or all-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

Small Station Wagons

Engine

2L 4-cylinder

Transmission

Automatic 4-spd

Drivetrain

4-Wheel or All-Wheel Drive

Fuel type

Regular

Annual petroleum use

12.9 barrels per year

Common questions about the 2003 Suzuki Aerio SX 4WD

Quick answers to the questions people most often search for when looking up the 2003 Suzuki Aerio SX 4WD.

• Is the 2003 Suzuki Aerio SX 4WD fuel efficient?

  It is in line with the rest of the class. The 2003 Suzuki Aerio SX 4WD returns 23 combined MPG, and the average car in the Small Station Wagons class for the same model year sits at 22.3 MPG.
• What MPG does the 2003 Suzuki Aerio SX 4WD get?

  The EPA rates the 2003 Suzuki Aerio SX 4WD at 23 combined MPG, 21 MPG in city driving, and 26 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 2003 Suzuki Aerio SX 4WD per year?

  The EPA estimates an annual fuel cost of $2,600 for the 2003 Suzuki Aerio SX 4WD. 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 2003 Suzuki Aerio SX 4WD use?

  The EPA lists the 2003 Suzuki Aerio SX 4WD as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity.
• How much CO₂ does the 2003 Suzuki Aerio SX 4WD 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 2003 Suzuki Aerio SX 4WD?

  City driving returns 21 MPG and highway driving returns 26 MPG, a gap of 5 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns.
• What engine is in the 2003 Suzuki Aerio SX 4WD?

  The 2003 Suzuki Aerio SX 4WD has a 2-liter 4-cylinder engine.
• What transmission and drivetrain does the 2003 Suzuki Aerio SX 4WD have?

  The 2003 Suzuki Aerio SX 4WD comes with a automatic 4-spd transmission and 4-wheel or all-wheel drive. All-wheel-drive variants typically read 1 to 3 MPG lower than the front-wheel-drive equivalent of the same engine, since the extra hardware adds weight and parasitic loss.
• How does the 2003 Suzuki Aerio SX 4WD compare to the best car in its class?

  The most efficient car in the Small Station Wagons class for the 2003 model year is the Volkswagen Jetta Wagon at 33 combined MPG. The Suzuki Aerio SX 4WD returns 23 MPG, a gap of 10 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
• How much more does the 2003 Suzuki Aerio SX 4WD cost in fuel compared to an average car?

  The EPA estimates that over five years, the 2003 Suzuki Aerio SX 4WD will cost about $2,250 more in fuel than an average new vehicle of the same model year. The difference accumulates because the car uses more fuel per mile, not because of any one-off charge at the dealership.

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.