Mitsubishi Diamante MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated Mitsubishi Diamante model year from 1992 to 2005 — each engine and transmission with its official city, highway and combined figures. Over these years the Diamante has been offered with 3.5L 6-cyl, 3.0L 6-cyl engines; the most efficient version is the 1997 (up to 19 MPG combined). Every rated gas version calls for premium gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
Mitsubishi Diamante fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 2005 | 18 MPG | 3.5L 6-cyl | — | — |
| 2004 | 18 MPG | 3.5L 6-cyl | — | — |
| 2003 | 18 MPG | 3.5L 6-cyl | — | — |
| 2002 | 18 MPG | 3.5L 6-cyl | — | — |
| 2001 | 18 MPG | 3.5L 6-cyl | — | — |
| 2000 | 18 MPG | 3.5L 6-cyl | — | — |
| 1999 | 18 MPG | 3.5L 6-cyl | — | — |
| 1998 | 18 MPG | 3.5L 6-cyl | — | — |
| 1997 | 19 MPG | 3.5L 6-cyl | — | — |
| 1996 | 18–19 MPG | 3.0L 6-cyl | — | — |
| 1995 | 19 MPG | 3.0L 6-cyl | — | — |
| 1994 | 18–19 MPG | 3.0L 6-cyl | — | — |
| 1993 | 18–19 MPG | 3.0L 6-cyl | — | — |
| 1992 | 18–19 MPG | 3.0L 6-cyl | — | — |
2005 Mitsubishi Diamante: engines & MPG
The 2005 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante Sedan | 3.5L 6-cyl | Automatic 4-spd | Premium | 15 | 23 | 18 MPG |
2004 Mitsubishi Diamante: engines & MPG
The 2004 Diamante was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante Sedan | 3.5L 6-cyl | Automatic (S4) | Premium | 15 | 23 | 18 MPG |
| Diamante Sedan | 3.5L 6-cyl | Automatic 4-spd | Premium | 15 | 23 | 18 MPG |
2003 Mitsubishi Diamante: engines & MPG
The 2003 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante Sedan | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 18 MPG |
2002 Mitsubishi Diamante: engines & MPG
The 2002 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 18 MPG |
2001 Mitsubishi Diamante: engines & MPG
The 2001 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 18 MPG |
2000 Mitsubishi Diamante: engines & MPG
The 2000 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 18 MPG |
1999 Mitsubishi Diamante: engines & MPG
The 1999 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1998 Mitsubishi Diamante: engines & MPG
The 1998 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 18 MPG |
1997 Mitsubishi Diamante: engines & MPG
The 1997 Diamante was EPA-rated in 1 version (3.5L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.5L 6-cyl | Automatic 4-spd | Premium | 16 | 24 | 19 MPG |
1996 Mitsubishi Diamante: engines & MPG
The 1996 Diamante was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 18 to 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 19 MPG |
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1995 Mitsubishi Diamante: engines & MPG
The 1995 Diamante was EPA-rated in 1 version (3.0L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 19 MPG |
1994 Mitsubishi Diamante: engines & MPG
The 1994 Diamante was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 18 to 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante Wagon | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 19 MPG |
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1993 Mitsubishi Diamante: engines & MPG
The 1993 Diamante was EPA-rated in 3 versions (3.0L 6-cyl), with combined economy from 18 to 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante Wagon | 3.0L 6-cyl | Automatic 4-spd | Premium | 17 | 23 | 19 MPG |
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 18 MPG |
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1992 Mitsubishi Diamante: engines & MPG
The 1992 Diamante was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 18 to 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 23 | 19 MPG |
| Diamante | 3.0L 6-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
Frequently asked questions
What MPG does a Mitsubishi Diamante get?
Depending on year and engine, EPA combined ratings for the Diamante range from 18 to 19 MPG. The most efficient rated version is the 1997 model year.
What engines does the 2005 Mitsubishi Diamante have?
The 2005 Diamante was EPA-rated with 3.5L 6-cyl engines — see the 2005 table above for each version's exact city/highway figures.
Does the Mitsubishi Diamante require premium gas?
Yes — every EPA-rated gas Diamante version specifies premium gasoline.
https://vehisales.com/research/fuel-economy/mitsubishi/diamante.
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See also: Mitsubishi Diamante hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].