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2005 Isuzu Ascender

US · SUV · Sport Utility Vehicle - 2WD

The 2005 Isuzu Ascender is listed in the US market as a suv with gasoline power. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.

Engine
Varies by configuration: 4.2L 6-cylinder, 5.3L 8-cylinder (DOD)
Transmission
4-speed automatic
Drivetrain
Varies by configuration: RWD, AWD
Fuel
Gasoline
Economy
15 mpg (15.7 L/100 km) to 16 mpg (14.7 L/100 km) combined
Generic outline for this body type. An illustration, not a photograph.
Specifications at a Glance

Key Figures

Units:
Engine / Powertrain
4.2L 6-cylinder, 5.3L 8-cylinder (DOD)
Combined Economy
15 mpg (15.7 L/100 km) to 16 mpg (14.7 L/100 km) combined
Drivetrain
RWD, AWD
Transmission
4-speed automatic
Market: US·Switch units to convert the figures shown.
Compare 2005 Isuzu Ascender ↗

Engine

Engine
SpecificationValueSource
EngineVaries by configuration: 4.2L 6-cylinder, 5.3L 8-cylinder (DOD)
Displacement4.2 L to 5.3 L
Cylinders6 to 8
Fuel typeGasoline

Transmission and drivetrain

Transmission and drivetrain
SpecificationValueSource
TransmissionAutomatic
Gears4
DrivetrainVaries by configuration: RWD, AWD

Fuel economy and range

Fuel economy and range
SpecificationValueSource
Combined15 mpg (15.7 L/100 km) to 16 mpg (14.7 L/100 km)
City13 mpg (18.1 L/100 km) to 14 mpg (16.8 L/100 km)
Highway18 mpg (13.1 L/100 km) to 20 mpg (11.8 L/100 km)

Our sources do not publish these for this vehicle: Aspiration, Power, Torque, Electric range, Battery capacity. We leave them out instead of estimating.

Trims and configurations

6 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.

Recalls

NHTSA lists 1 recall campaign for this model year. Last checked November 11, 2026.

  • 05V035000: VISIBILITY:WINDSHIELD

    CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 212, 'WINDSHIELD MOUNTING.' THE WINDSHIELD URETHANE BEAD MAY NOT HAVE ADHERED TO THE BODY IN CERTAIN AREAS DURING THE CURE PROCESS.

    Remedy: DEALERS WILL REPLACE THE WINDSHIELD FREE OF CHARGE. THE RECALL BEGAN ON MARCH 10, 2005. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CHEVROLET AT 1-800-630-2438, OR GMC AT 1-866-996-9463.

    Reported February 3, 2005. View on NHTSA

Data sources

  • EPA fueleconomy.gov · retrieved November 8, 2026 · US Government public data
  • NHTSA vPIC · retrieved October 17, 2026 · US Government public data

Source checked: November 8, 2026

Data verified: November 8, 2026

Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.

Compare

Related vehicles

  • 2004 Isuzu Ascender

    SUV, Gasoline

    Varies by configuration: 4.2L 6-cylinder, 5.3L 8-cylinder · Varies by configuration: RWD, AWD
    16 mpg (14.7 L/100 km) to 14 mpg (16.8 L/100 km)

  • 2006 Isuzu Ascender

    SUV, Gasoline

    Varies by configuration: 4.2L 6-cylinder, 5.3L 8-cylinder · Varies by configuration: RWD, AWD
    16 mpg (14.7 L/100 km) to 15 mpg (15.7 L/100 km)

  • 2005 GMC Yukon

    SUV, Varies by configuration: Gasoline, Flex fuel

    Varies by configuration: 4.8L 8-cylinder, 5.3L 8-cylinder, 6.0L 8-cylinder, 5.3L 8-cylinder (FLEX-FUEL) · Varies by configuration: RWD, AWD
    16 mpg (14.7 L/100 km) to 13 mpg (18.1 L/100 km)

  • Varies by configuration: 3.5L 6-cylinder, 3.8L 6-cylinder · Varies by configuration: FWD, AWD
    18 mpg (13.1 L/100 km) to 17 mpg (13.8 L/100 km)

  • 4.6L 8-cylinder · Varies by configuration: RWD, AWD
    13 mpg (18.1 L/100 km)

Frequently asked questions

What engine does the 2005 Isuzu Ascender have?

Varies by configuration: 4.2L 6-cylinder, 5.3L 8-cylinder (DOD). Engines can differ by trim, so check the trim list below.

What is the fuel economy of the 2005 Isuzu Ascender?

Combined fuel economy is 15 mpg (15.7 L/100 km) to 16 mpg (14.7 L/100 km), as published by the source shown in the specification table.

Is the 2005 Isuzu Ascender front-wheel, rear-wheel or all-wheel drive?

Drivetrain: Varies by configuration: RWD, AWD.

Are there recalls for the 2005 Isuzu Ascender?

NHTSA lists 1 recall campaign for this model year (last checked November 11, 2026). Details are in the Recalls section.