1999 Mitsubishi Diamante

  • 1999 Mitsubishi Diamante ES Sedan

    ES Sedan

    • MAX MPG
    • SEATS
    • ENGINE
      3.5L V6
    • MSRP
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1999 Mitsubishi Diamante Review

Near-luxury at a bargain.

Reviewed by Automotive on


The 1999 Mitsubishi Diamante marks the brand’s attempt to compete in the luxury sedan market. Initially, the Diamante got largely ignored, but the 1997 Diamante returned with an all-new design, more luxurious accessories, and a lower price tag to make it more competitive. The 1999 Diamante continues this tradition, making the Diamante a solid, if lesser known, option in the near-luxury market. While it does not deliver the same performance as some of the other Mitsubishi models, the Diamante still offers high performance that exceeds industry standard.

Overall, the Diamante makes a good, solid entry for buyers looking for a near-luxury sedan. The only real issue with the Diamante remains the same issue that has always plagued it. Drivers do not go to Mitsubishi when shopping for a luxury sedan, and many do not even know the Diamante exists. The styling of the Diamante would look more at home at a BMW dealer than a Mitsubishi dealer, which further reduces the level of interest it generates from people browsing a dealership. It proves well worth checking out and holds its own in the competitive near-luxury market, but the Diamante does not reach the same sales level as better-known industry stalwarts.

The Range

Body Styles: sedan
Engines: 3.5-liter six-cylinder
Transmissions: four-speed automatic
Models: Mitsubishi Diamante

What's New

The 1999 Mitsubishi Diamante ES and Diamante LS models get replaced by a single base model. The 1999 Diamante adds some color options.


The Mitsubishi Diamante classifies as a sedan that looks a little out of place with the sporty Mitsubishi lineup. It looks like a stylish car with graceful curves, but it remains far more conservative and traditional than the 3000 GT or Eclipse. The 1999 Mitsubishi Diamante would not look out of place in the fleet of any more traditional luxury brand.

Standard features for the 1999 Mitsubishi Diamante include keyless entry and power mirrors. Heated mirrors and a power moonroof remain optional.


The 1999 Mitsubishi Diamante features a spacious interior, which feels far more comfortable than most of the Mitsubishi lineup. The Diamante includes power windows, power locks, cruise control, air-conditioning, automatic climate control, an AM/FM radio, and a cassette player as standard equipment. A leather-trimmed steering wheel, heated seats, an Infinity audio system, a CD player, a CD changer, power seats, and leather seating, provide optional features.

Performance & Handling

The performance of the Mitsubishi Diamante seems a little deceptive. The styling and design of it remains a little weaker than most of the Mitsubishi lineup, but it actually has excellent performance. The acceleration moves fast, rivaling the 1999 Mitsubishi 3000 GT SL. In addition, it maneuvers very well. It does not quite reach the same level as a sports car, but it proves better than many luxury sedans.


The 1999 Mitsubishi Diamante comes equipped with dual front airbags, four-wheel anti-lock brakes, and traction control.

EPA Fuel Economy

Mitsubishi Diamante: 16/22 mpg city/highway

You'll Like

  • Stylish design
  • Spacious interior

You Won't Like

  • Nothing distinguishes it from the competition

Sum Up

Near-luxury at a bargain.

If You Like This Vehicle

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