2003 Mitsubishi Diamante

Sedan

FWD

Premium Gasoline

Horsepower

–

MPG Combined

18 mpg

MSRP

–

Torque

–

Reliability Score

99/ 100Excellent

Based on 75 NHTSA complaints

Should You Buy a 2003 Mitsubishi Diamante?

The 2003 Mitsubishi Diamante is a mid-size sedan that offers a blend of comfort and performance, featuring a robust 3.5L V6 engine that produces 205 horsepower and 231 lb-ft of torque. With a front-wheel-drive configuration and a 4-speed automatic transmission, it provides a smooth driving experience, although the fuel economy is less than stellar at 18 MPG combined. Priced at an MSRP of $25,997, this vehicle appeals to those seeking a reliable, spacious sedan with a decent level of luxury and features for its time.

In terms of safety and reliability, the Diamante has a commendable reliability score of 99/100, indicating that it can be a dependable choice for buyers. However, potential owners should be aware of some common complaints, particularly related to the visibility and HVAC systems, which tend to arise around the 60,000 to 80,000-mile mark. Overall, the Diamante is a solid option for those looking for a comfortable ride with a touch of performance, but it may require some attention to specific issues as it ages.

Ideal For

This vehicle is best suited for budget-conscious buyers seeking a reliable, comfortable sedan for daily commuting and family use.

Strengths

+High reliability score of 99/100
+Spacious interior with comfortable seating for five
+Strong V6 engine performance
+Smooth and comfortable ride quality
+Good safety ratings with minimal severe incidents

Weaknesses

-Requires premium unleaded fuel, increasing operating costs
-Lower fuel economy at 18 MPG combined
-Common complaints regarding HVAC and visibility systems
-Aging technology and features compared to modern vehicles
-Limited availability of parts due to age

Known Issues (NHTSA Data)

The 2003 Mitsubishi Diamante has a total of 75 NHTSA complaints, with the most notable issues related to the visibility and HVAC systems, particularly the heater core. These problems typically manifest between 60,000 and 80,000 miles. While there is one crash incident reported and one injury, there are no significant fire incidents or fatalities on record, indicating that safety is generally upheld. Overall, while there are some known issues, the vehicle's reliability score suggests that it remains a trustworthy choice for buyers.

Complaint Patterns by Mileage

VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE

60000-80000 mi

7 reports

ENGINE AND ENGINE COOLING:COOLING SYSTEM

60000-80000 mi

6 reports

Top Complaint Areas

VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE32% of complaints

ENGINE AND ENGINE COOLING:COOLING SYSTEM15% of complaints

ENGINE AND ENGINE COOLING7% of complaints

TIRES4% of complaints

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR4% of complaints

Performance

Horsepower: –
Torque: –
Engine: 3.5 L
Cylinders: V6
Transmission: Automatic 4-spd
Drive Type: FWD

Efficiency

MPG Combined: 18
Fuel Type: Premium Gasoline

Dimensions

Length: –
Width: –
Height: –
Wheelbase: –
Curb Weight: –
Ground Clearance: –

Capacity

Doors: –
Seating: –
Cargo: –
Max Cargo: –
Max Towing: –
Max Payload: –

ddpc Estimated Value

$5,808

$4,937 – $6,680

Depreciation Over Time

New

5yr

10yr

15yr

ddpc Estimate based on original MSRP, standard depreciation curves, vehicle class, and NHTSA reliability data. Not a substitute for professional appraisal. Actual value depends on condition, mileage, location, and market conditions.

Estimated Cost of Ownership

Estimated Annual Cost

$4,113

Per Mile

$0.34

5-Year Total

$40,754

Fuel

$2,333/yr

Maintenance

$600/yr

Insurance

$1,180/yr

Depreciation

$4,038/yr

Based on industry-standard estimates for this vehicle class. Fuel cost assumes 12,000 mi/yr at national average gas prices. Maintenance uses class-based intervals, not manufacturer-specific schedules. Actual costs vary by location, driving habits, and vehicle condition.