All Mitsubishi Sigma Models & Variants Explained

Mitsubishi Sigma might not be the name that rings for all modern-day car enthusiasts. However, for those who admire the subtle beauty of old-fashioned Japanese design, Sigma has an honourable spot. It was primarily produced between 1976 and the mid-1990s. In the late 1990s, the Sigma was a refined medium-sized car designed to offer the best in comfort, reliability, and elegance, which made Mitsubishi’s brand name recognizable throughout its glorious times.

In this thorough guide, we will explore the different Sigma models and trims, market variations, and their development to help you understand why this name plate continues to be important among collectors of classic cars and JDM enthusiasts alike.

What is the Mitsubishi Sigma?

Mitsubishi Sigma refers to a mid-sized sedan manufactured through Mitsubishi Motors under various international brands. In Japan, the Sigma was first introduced as an element within the Galant family, and in Australia, it gained its own brand. Sigma is also sold under a different name and was sold under different brands, such as Chrysler and Dodge, in accordance with the area of operation.

Entity relationships: Mitsubishi Motors, Galant, Chrysler, JDM (Japanese Domestic Market), Sigma

Timeline of Mitsubishi Sigma Models by Generation

Let’s dissect this Sigma into key models and generations, each indicating a shift in design, technology, and position.

First Generation (1976-1980) – Galant Sigma

• It is based on the Mitsubishi Galant platform (A120/A130)
• Marketed in Japan as Galant S (Sigma)
• Engines: 1.6L, 1.85L, 2.0L 4-cylinder
• Manual and auto options
• Awarded for reliability and value for money

Important Markets Japan, Australia, some regions of Europe

Variants: Base, GL, Super Saloon, Galant Sigma 2000

Second Generation (1980-1984) – International Expansion

• The style is redesigned slightly; it’s square-edged. Gets very popular
• Platform: Galant Eterna
• Technology enhancements include electronic fuel injection in more trims.
• The brand is sold by Mitsubishi Sigma in Australia in Australia as Mitsubishi Sigma (GH series)
• Chrysler Sigma rebadged in some countries, such as New Zealand.

Popular Trims: Sigma GL, SE, and GSR

Engine Options The options include up to the 2.6L Astron engine

The 2.6L engine became famous throughout Australia as a strong mid-size with acceptable fuel efficiency.

Third Generation (1984-1987) – Technological Leap

• Galant Sigma Galant Sigma grew more refined.
• The design of the body is aerodynamic, with smoother lines.
• The introduction of turbocharged versions
• Electronic dashboards, better suspension

Available Options: Cruise control, ABS, digital instrument cluster (on certain trims)

Expansion of the entity: turbocharged engine Digital dashboard JDM styling

Australian Sigma (1977-1987)

In Australia, The Sigma began to take on an existence that was its own.

• Sold at first as Chrysler Sigma
• After 1980, the company changed its name to Mitsubishi Sigma (after Chrysler Australia acquisition)
• Fans cherish the GH and GJ series.

Unique Models:

• Sigma Scorpion (coupe version)
• Sigma Turbo (rare performance version)

Note on the Entity: Australian-specific Sigma versions differ from the global models.

Mitsubishi Sigma (1991-1996) – Executive Sedan Era

This model was not based on Galant and was instead based on Mitsubishi Diamante. Mitsubishi Diamante platform.

• Marketed in Europe and Australia as Mitsubishi Sigma
• More upscale
• Automatic transmissions and V6 engines are standard.
• Leather options: Climate control, leather, premium audio

Most Popular Engines: 3.0L V6 (6G72) FWD layout

Rival Brands: Toyota Camry, Nissan Maxima, Mazda 929

In this era of the Sigma, the Sigma was not only a car for the family but a show of quality.

sigma Variants of Market

Japan

• Sold under the name Galant Sigma, then transitioned to Eterna Sigma.
• The focus is on performance and luxury.

Australia

• Many generations rebadged uniquely.
• The turbo trims and wagons are included.
• Sigma Magna was introduced as the successor.

Europe

• The mid-90s saw the introduction of Diamante, a component of Sigma was introduced.
• The focus is on executive markets (company fleets and mid-level luxury)

North America

• Sigma label was limited in its use. However, Galant and Diamante had similar functions.
• Some models were available in conjunction with Dodge Colt and Chrysler in the early days.

Specs Snapshot: Key Sigma Trims

Trim	Engine	Transmission	Features
GL	1.6L	4-speed manual	Base model, manual locks
SE	2.0L EFI	5-speed manual / 3AT	A/C, power windows
GSR Turbo	2.0L Turbo	5-speed manual	Performance trim
Executive V6	3.0L V6	Auto	Leather seats, ABS

Semantic structure: The entities used in this context include trims, engine types, and drivetrain layouts, along with historical context.

Common Issues & Maintenance Tips

• 2.6L Astron engines can suffer from head gasket leaks
• Rust is a common feature in the 80s Sigma body panels.
• Turbo models require careful maintenance of the components that boost
• Parts for spares for Australian versions aren’t easy to find; however, they are readily available via JDM importers and old-fashioned clubs.

Buying a Mitsubishi Sigma Today

For those who are classic vehicle collectors or a fan, If you’re a collector or classic car enthusiast, the Sigma is an excellent alternative that is often overlooked. There are a few reasons to think about it:

• Affordable price range when compared with other JDM classics
• Unique brand identity for the market (primarily Australian and Japanese variants)
• Surprised performance when you are in Turbo and V6 trims
• Parts availability is good. However, it is dependent on the market.

Watch Out For:

• Rusted subframes
• Low fuel efficiency in older models that have a carburettor.
• Rebuilds of transmissions using automatic versions

A Forgotten Legend

The Mitsubishi Sigma might not be an instant hit, but it definitely has left its mark on the automotive world. If you’re looking to restore one, find a distinctive project car, or just explore JDM tradition, it is a must. Sigma provides a mix of performance, style, and nostalgia that only a handful of mid-sized cars can rival.

Frequently Asked Questions