How much does the 2003 INFINITI M45 cost?

The 2003 INFINITI M45 has a starting MSRP of $42,300. Trim pricing includes 45 from $42,300.

What is the fuel economy of the 2003 INFINITI M45?

The 2003 INFINITI M45 achieves up to 18 MPG combined (EPA estimate), depending on trim and configuration.

How much cargo space does the 2003 INFINITI M45 have?

The 2003 INFINITI M45 offers up to 13.4 cubic feet of cargo capacity, depending on trim and seating configuration.

How many trims does the 2003 INFINITI M45 come in?

The 2003 INFINITI M45 is available in 1 trim across Sedan body styles with rear wheel drive.

2003 INFINITI M45

1 trim · Sedan

Starting MSRP

$42,300

Shop INFINITI All INFINITI models

No live listings right now

Manufacturer specs and trim data below are still available for research. Check back for dealer inventory, or browse other INFINITI models.

Shop INFINITI inventory

Pricing

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

MSRP by trim

$42,300

Starting MSRP

Purchase information

Based on 45

Total price (45 MSRP)

$42,300

Typical monthly

$838/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-07-12). Not a credit offer; actual APR varies by lender, credit, and dealer.

Open loan calculator

Compare 2003 INFINITI M45 trims

45
MSRP
$42,300
Fuel economy (city/hwy)
16/22
Horsepower
340 hp
Torque
333 lb-ft
Engine
4.5L V8 gas
Seating
5
Drivetrain
RWD
Cargo (cu ft)
13.4
Max towing
—

Compare 2003 INFINITI M45 trim specifications
Spec	45
MSRP	$42,300
Fuel economy (city/hwy)	16/22
Horsepower	340 hp
Torque	333 lb-ft
Engine	4.5L V8 gas
Seating	5
Drivetrain	RWD
Cargo (cu ft)	13.4
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: gas
Fuel type: premium unleaded (required)
Cylinders: V8
Displacement: 4.5 L
Horsepower: 340 hp
Torque: 333 lb-ft
Transmission: 5-speed shiftable automatic
Drivetrain: rear wheel drive

Dimensions

Body type: Sedan
Doors: 4
Seating: 5
Length: 197.2 in
Width: 69.7 in
Height: 57.6 in
Wheelbase: 110.2 in
Ground clearance: 5.7 in

Capacity & weight

Cargo capacity: 13.4 cu ft
Max cargo capacity: 13.4 cu ft
Curb weight: 3,851 lbs
Fuel tank: 21.1 gal

Fuel economy & EV

Combined MPG: 18
City MPG: 16
Highway MPG: 22

Full specifications by trim
Spec	Value
Engine & drivetrain
Engine type	gas
Fuel type	premium unleaded (required)
Cylinders	V8
Displacement	4.5 L
Horsepower	340 hp
Torque	333 lb-ft
Transmission	5-speed shiftable automatic
Drivetrain	rear wheel drive
Dimensions
Body type	Sedan
Doors	4
Seating	5
Length	197.2 in
Width	69.7 in
Height	57.6 in
Wheelbase	110.2 in
Ground clearance	5.7 in
Capacity & weight
Cargo capacity	13.4 cu ft
Max cargo capacity	13.4 cu ft
Curb weight	3,851 lbs
Fuel tank	21.1 gal
Fuel economy & EV
Combined MPG	18
City MPG	16
Highway MPG	22