Brief Introduction of Mitsubishi Diamante
The Mitsubishi Diamante is a mid-size and later full-size sedan and station wagon that was manufactured by Mitsubishi Motors from 1990 to 2005. Spanning two distinct generations, the Diamante was Mitsubishi’s flagship sedan in many markets, designed to compete with other Japanese luxury and near-luxury vehicles. The name “Diamante,” derived from the Spanish, Portuguese, and Italian word for “diamond,” was a nod to Mitsubishi’s three-diamond logo. The vehicle was known for its advanced technology in its early years, comfortable ride, and powerful V6 engine options. It was available in various forms, including as a four-door hardtop, a more conventional sedan, and a station wagon, with both front-wheel and all-wheel-drive configurations offered during its production run.
Mitsubishi Diamante Overview
| Brand | Mitsubishi |
| Model | Diamante |
| Launch Year | 1990 |
| Price | Discontinued; prices for used models vary. |
| Variants | ES, LS, VR-X (North America) |
| Body Type | Sedan, Station Wagon |
| Engine | 2.0L V6, 2.5L V6, 3.0L V6, 3.5L V6 |
| Power & Torque | 125 PS to 270 hp; torque figures vary by engine |
| Transmission | 4-speed automatic, 5-speed automatic, 5-speed manual |
| Fuel Type | Gasoline |
| Mileage | Approximately 15-17 MPG city / 23-25 MPG highway (later models) |
| Colors | Various, including white, black, silver, red, blue |
| Safety Rating | Not publicly available for most models. |
| Dimensions | Length: ~4,830-4,978 mm; Width: ~1,785 mm; Height: ~1,435-1,440 mm |
| Boot Space | ~14.2 cubic feet (418 L) for later sedan models |
Generations and History of Mitsubishi Diamante
First Generation (1990–1995)
The first-generation Mitsubishi Diamante was introduced in 1990, winning the prestigious “Car of the Year Japan” award for 1990-1991. It was developed as a larger, more luxurious version of the Mitsubishi Galant platform. This generation was offered in three body styles: a four-door hardtop with frameless windows, a conventional six-window sedan, and a station wagon. In the Japanese market, the Diamante was packed with advanced technology, including four-wheel steering, traction control, and an electronically controlled suspension. Engine options were exclusively V6, ranging from a 2.0-liter to a 3.0-liter, with both manual and automatic transmissions available. All-wheel-drive was also an option on certain Japanese models. For the North American market, the Diamante arrived in 1991 for the 1992 model year, initially available as a hardtop sedan in base and LS trims, powered by a 3.0-liter V6 engine. A wagon variant, built in Australia, was added for the 1993 model year.
Second Generation (1995–2005)
The second generation of the Diamante was launched in Japan in January 1995 and was later introduced to other markets. This generation saw the discontinuation of the hardtop and manual transmission options. The car grew slightly in size, offering improved interior space. The engine lineup was updated, with the 2.0L V6 being dropped and new 2.5-liter and 3.5-liter V6 engines added. A 3.0-liter MIVEC V6 with 270 horsepower was also available in Japan. In North America, the second generation debuted for the 1997 model year. The Australian-built Mitsubishi Verada formed the basis for the Diamante sold in this region. Over its lifespan, this generation received several updates and facelifts. Notably, a sporty VR-X model was introduced, featuring a more powerful engine and sport-tuned suspension. The final models were produced until 2005.
Latest Generation
The Mitsubishi Diamante was discontinued after the 2005 model year and does not have a currently available latest generation. The last models sold were part of the second generation. Mitsubishi ceased exporting the Diamante to North America after 2004 due to declining sales. In Japan, production also concluded around the same time. The role of a flagship sedan in Mitsubishi’s lineup was later indirectly filled by upper trims of the Mitsubishi Galant.
Mitsubishi Diamante Facelifts and Yearly Updates
| Year | Change / Update |
| 1993 | The base Diamante in North America was renamed to ES. Minor equipment changes were made, and the station wagon became available. |
| 1994 | Sedans received revised taillamps and a new four-spoke steering wheel with audio controls. |
| 1998 | A new ABS system and remote keyless entry became standard. A sunroof was made standard on the LS trim. |
| 1999 | The trim levels were consolidated to a single offering with optional packages. |
| 2002 | A significant facelift was introduced with a refreshed exterior and interior. Electronic Brakeforce Distribution (EBD) became standard. A sporty VR-X model was added to the lineup. |
| 2004 | The final facelift brought a new front fascia with a new corporate grille, a redesigned dashboard and center console, and a standard rear spoiler for the VR-X. The LS and VR-X trims gained a Sportronic transmission with a manual shifting mode. |
Mitsubishi Diamante Variants and Features
Throughout its production, the Mitsubishi Diamante was available in several variants, with features and trim levels varying by market and model year. In North America, the primary trims were the base ES, the more luxurious LS, and the sporty VR-X. Standard features on later ES models included automatic air conditioning, a CD player, cruise control, and power accessories. The LS trim typically added leather upholstery, a premium Infinity sound system, power-adjustable front seats, and heated seats and mirrors. The VR-X variant was distinguished by a slightly more powerful engine due to a freer-flowing exhaust, a sport-tuned suspension, unique styling cues like a rear spoiler and different headlamps, and sport-style bucket seats. Traction control was also standard on the VR-X. The interior of the Diamante was generally praised for its comfort and spaciousness.
Mitsubishi Diamante Engine, Performance, and Driving Experience
The Mitsubishi Diamante was exclusively powered by V6 engines throughout its production. The first generation offered a range of displacements from 2.0L to 3.0L. In North America, the first-generation models were equipped with a 3.0-liter V6, with a SOHC version producing around 175 horsepower for the base models and a DOHC version making 202 horsepower for the LS trim. The second generation saw the introduction of a 3.5-liter V6 engine for the North American market, which produced 205 horsepower in the ES and LS models, and 210 horsepower in the VR-X. This engine was known for its smooth power delivery. Transmissions were primarily 4-speed automatics in North America, with later LS and VR-X models featuring a Sportronic transmission that allowed for manual gear selection. The suspension, featuring MacPherson struts at the front and a multi-link setup at the rear, provided a comfortable and stable ride. The VR-X model offered a firmer, sport-tuned suspension for improved handling. Overall, the driving experience was geared more towards comfort and luxury rather than pure sportiness, although the VR-X added a more engaging character.
Mitsubishi Diamante Pricing and Mileage
When new, the Mitsubishi Diamante was priced in the near-luxury segment. For example, in 2004, the manufacturer’s suggested retail price started at around $25,594 for the ES sedan. As the Diamante has been discontinued for many years, its price on the used market is now significantly lower and varies based on condition, mileage, and model year. Fuel efficiency for the later models with the 3.5-liter V6 engine was rated at approximately 17 miles per gallon in the city and 25 miles per gallon on the highway. Real-world mileage as reported by owners is generally in line with these figures, though some have noted lower city mileage. Maintenance costs are a consideration for potential buyers of used models, as some parts may be harder to find due to the car’s age and discontinuation.
Mitsubishi Diamante Colors, Design, and Dimensions
The Mitsubishi Diamante featured an elegant and contemporary design for its time. The first generation was characterized by its sleek hardtop sedan profile, while the second generation adopted a more conventional but still stylish sedan body. The 2004 facelift introduced Mitsubishi’s new corporate front-end design. The car was available in a range of typical colors for its class, including various shades of white, black, silver, red, and blue. Inside, the design was focused on ergonomics and a premium feel, with later models featuring a redesigned center console for improved ease of use. The dimensions of the later second-generation models were approximately 4,978 mm in length, placing it in the full-size sedan category. It rode on 16-inch alloy wheels. The trunk capacity of the sedan was a respectable 14.2 cubic feet.
Mitsubishi Diamante Safety Features
- Airbags: Driver and front passenger airbags were standard features in later models. Side-impact airbags were not available.
- ABS / EBD: All-disc antilock brakes (ABS) were standard on later models. Electronic Brakeforce Distribution (EBD) was added in 2002 to help enhance braking control.
- Electronic Stability Control: Traction control was available, standard on the VR-X and optional on the LS.
- Crash Test Ratings: Specific crash test ratings from agencies like the NHTSA or IIHS are not readily available for most model years.
- Other advanced safety systems: For its time, the Diamante offered advanced safety features. Child seat anchors and child door locks were standard on later models.
Mitsubishi Diamante Infotainment and Connectivity
The infotainment systems in the Mitsubishi Diamante evolved over its production run. In its final years, the base ES model came standard with a six-speaker stereo with a CD player. The higher-end LS trim featured a premium 270-watt Mitsubishi/Infinity AM/FM/CD sound system with eight speakers. Steering wheel-mounted audio controls were also available on the LS. For its era, these were considered competitive features. However, modern connectivity options like Apple CarPlay, Android Auto, Bluetooth streaming, and USB ports were not available as the car was discontinued before these technologies became commonplace. A navigation system was available as an option on some models.
Mitsubishi Diamante Owner Reviews & Ratings
Owner reviews for the Mitsubishi Diamante are generally positive, particularly for its comfort, reliability, and performance. Many owners of the first-generation models praised the car’s durability and high-quality interior materials. For the second generation, owners frequently highlight the smooth and powerful V6 engine, comfortable ride, and spacious interior as strong points. The car is often described as a good value, offering luxury features at a more affordable price than its competitors. Common complaints, especially for older, used models, include higher-than-average maintenance costs for certain repairs and the potential for electrical issues. Some owners have also noted issues with paint peeling on later models and less-than-ideal city fuel economy. Despite some drawbacks, a high percentage of owners have recommended the Diamante.
Mitsubishi Diamante Comparison with Similar Cars
During its time, the Mitsubishi Diamante competed in the near-luxury sedan segment against rivals like the Nissan Maxima, Acura Vigor, Mazda 929, and Toyota Avalon. Compared to these competitors, the Diamante often offered a similar level of features and comfort at a competitive price point. It was noted for its smooth V6 power and comfortable ride. The Nissan Maxima, often marketed as a “four-door sports car,” generally offered a more engaging driving experience, while the Diamante leaned more towards luxury and comfort. Against premium competitors like the Lexus ES 300, the Diamante was priced similarly in its second generation but struggled to match the brand prestige and perceived quality of the Lexus. The Diamante’s value proposition was one of its key selling points, providing a well-equipped and comfortable sedan for the money.
Mitsubishi Diamante Awards and Recognition
- Car of the Year Japan (1990–1991): The first-generation Diamante won this prestigious award upon its debut.
- Wheels Car of the Year (1996): The Australian-made Mitsubishi Verada and Magna, on which the second-generation Diamante was based, won this award.
- New Zealand Car of the Year (2002): The facelifted second-generation Diamante received this honor.
Interesting Facts about Mitsubishi Diamante
- The Diamante’s platform was also used for the sporty Mitsubishi 3000GT.
- In Japan, some early models of the Diamante were equipped with advanced technology for the time, including four-wheel steering and one of the world’s first radar-based cruise control systems.
- The Diamante station wagons sold in North America were built in Australia, making them one of the relatively few Australian-made cars sold in the U.S.
Mitsubishi Diamante Legacy and Influence
The Mitsubishi Diamante played a significant role in Mitsubishi’s lineup during the 1990s and early 2000s as the brand’s flagship sedan. It was part of a wave of Japanese manufacturers entering the luxury and near-luxury segments. While it may not have achieved the same level of market success or brand recognition as some of its competitors like the Lexus ES, it showcased Mitsubishi’s engineering capabilities, especially in its early years with its advanced technology. The Diamante demonstrated that Mitsubishi could produce a comfortable, well-equipped, and powerful sedan to compete on the world stage. However, its sales in North America declined over time, leading to its eventual discontinuation. Today, the Diamante is remembered as a comfortable and stylish sedan that offered good value in its segment.
Mitsubishi Diamante Global Availability
The Mitsubishi Diamante was sold in various markets around the world. It was a key model in Japan, where it was first launched. It was also exported to North America, where it was available in the United States and, for a single model year (2004), in Canada. The first-generation sedans sold in North America were sourced from Japan, while the wagons were manufactured in Australia. The second-generation Diamantes for the North American market were primarily based on the Australian-built Mitsubishi Verada. The car was also sold in other markets, including New Zealand. Production took place in Nagoya, Japan, and Adelaide, South Australia.
Mitsubishi Diamante Maintenance and Ownership Costs
For current owners or those considering a used Mitsubishi Diamante, maintenance and ownership costs are an important factor. As the vehicle is no longer in production, the availability of certain spare parts might be a concern, potentially leading to higher repair costs. Some owners have reported that certain parts are only available through dealerships. Common maintenance items are generally available, but more specific components could be harder to source. The resale value of the Diamante is relatively low, which can be a benefit for buyers on the used market. Routine maintenance, such as oil changes and tire rotations, is comparable to other vehicles of its era. However, major repairs, if needed, could be costly. The original basic warranty was typically for 3 years or 36,000 miles.
Final Words about Mitsubishi Diamante
The Mitsubishi Diamante stands as a noteworthy chapter in Mitsubishi’s history, representing the company’s ambition in the competitive luxury and near-luxury sedan market. It offered a compelling blend of comfort, smooth V6 power, and, in its early days, advanced technology. While it was ultimately discontinued, the Diamante provided a comfortable and well-appointed alternative to its more established rivals. For buyers in the used car market today, a well-maintained Diamante can offer a great deal of comfort and features for a low price, though potential owners should be mindful of the potential for higher maintenance costs associated with an older, discontinued vehicle. The Diamante remains a “diamond in the rough” for those who appreciate its unique place in automotive history.