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2006 INFINITI M45

2 trims · Sedan

Starting MSRP

$47,150 – $49,950

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Key specifications

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Pricing

How much should you pay for the INFINITI M45? Select a trim to update purchase and lease estimates.

MSRP by trim

Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.

Purchase information

Based on 45

Total price (45 MSRP)

$47,150

Typical monthly

$934/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-08-23). Not a credit offer; actual APR varies by lender, credit, and dealer.

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Compare 2006 INFINITI M45 trims

  • 45

    MSRP
    $47,150
    Fuel economy (city/hwy)
    16/21
    Horsepower
    335 hp
    Torque
    340 lb-ft
    Engine
    4.5L V8 gas
    Seating
    5
    Drivetrain
    RWD
    Cargo (cu ft)
    14.9
    Max towing
    —

  • 45 Sport

    MSRP
    $49,950
    Fuel economy (city/hwy)
    16/21
    Horsepower
    335 hp
    Torque
    340 lb-ft
    Engine
    4.5L V8 gas
    Seating
    5
    Drivetrain
    RWD
    Cargo (cu ft)
    14.9
    Max towing
    —

Manufacturer specifications by trim and drivetrain. Same trim names with different MSRPs are distinct FWD/AWD (or other drivetrain) configurations from the catalog. MSRP excludes destination fees, taxes, and dealer-installed options.

Full specifications

Engine & drivetrain

Engine type
45gas
45 Sportgas
Fuel type
45premium unleaded (required)
45 Sportpremium unleaded (required)
Cylinders
45V8
45 SportV8
Displacement
454.5 L
45 Sport4.5 L
Horsepower
45335 hp
45 Sport335 hp
Torque
45340 lb-ft
45 Sport340 lb-ft
Transmission
455-speed shiftable automatic
45 Sport5-speed shiftable automatic
Drivetrain
45rear wheel drive
45 Sportrear wheel drive

Dimensions

Body type
45Sedan
45 SportSedan
Doors
454
45 Sport4
Seating
455
45 Sport5
Length
45192.6 in
45 Sport192.6 in
Width
4570.8 in
45 Sport70.8 in
Height
4559.4 in
45 Sport59.5 in
Wheelbase
45114.2 in
45 Sport114.2 in
Ground clearance
455.1 in
45 Sport5.3 in

Capacity & weight

Cargo capacity
4514.9 cu ft
45 Sport14.9 cu ft
Max cargo capacity
4514.9 cu ft
45 Sport14.9 cu ft
Curb weight
453,948 lbs
45 Sport3,995 lbs
Fuel tank
4520 gal
45 Sport20 gal

Fuel economy & EV

Combined MPG
4518
45 Sport18
City MPG
4516
45 Sport16
Highway MPG
4521
45 Sport21

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2006 INFINITI M45 FAQ

How much does the 2006 INFINITI M45 cost?
The 2006 INFINITI M45 has a starting MSRP of $47,150, ranging up to $49,950 for the top trim. Trim pricing includes 45 from $47,150; 45 Sport from $49,950.
What is the fuel economy of the 2006 INFINITI M45?
The 2006 INFINITI M45 achieves up to 18 MPG combined (EPA estimate), depending on trim and configuration.
How much cargo space does the 2006 INFINITI M45 have?
The 2006 INFINITI M45 offers up to 14.9 cubic feet of cargo capacity, depending on trim and seating configuration.
How many trims does the 2006 INFINITI M45 come in?
The 2006 INFINITI M45 is available in 2 trims across Sedan body styles with rear wheel drive.