1985 Buick Somerset in Blue: A Comprehensive Industry Review

The 1985 Buick Somerset stands as one of the most recognizable names in American luxury sedans of the mid-1980s. Often associated with the specific color scheme of a deep, metallic blue finish, this model year represents the maturity of General Motors' R-body platform. This review analyzes the engineering, market positioning, and long-term ownership of the 1985 Somerset, focusing specifically on the advantages and drawbacks that defined this era of full-size domestic luxury.

Key Takeaways

• Reliable Powertrain: The 1985 Somerset primarily utilized the 5.7L V8 or the 3.8L V6, both of which are known for longevity and ease of repair, provided the original cooling system is maintained.
• Comfort Over Sport: The vehicle prioritizes ride quality, NVH (Noise, Vibration, and Harshness) reduction, and interior space over driving dynamics.
• Market Value: As a mass-produced luxury sedan, it does not command collector pricing but offers a high value-to-cost ratio for budget-conscious buyers seeking a large, comfortable cruiser.
• Maintenance Complexity: While reliable, the R-body platform is subject to specific rust issues in high-humidity regions and requires careful attention to the complex electrical and hydraulic steering systems.

Historical Context and Model Overview

Introduced in 1982 to replace the Century, the Somerset was designed to compete directly with the Ford Thunderbird, Chrysler New Yorker, and European luxury entrants like the BMW 7 Series (in the grand tourer category). By 1985, the model had settled into its definitive form. The "Blue" variant, often referred to in dealer literature as "Triton Blue" or "Midnight Blue Metallic," became a signature hue for the vehicle, symbolizing executive stability and understated prestige.

Chassis and Engineering

The 1985 Somerset sits on the GM R-body chassis, shared with the Oldsmobile Cutlass Supreme and Pontiac 6000, but differentiated by its heaviest suspension tuning. It features a front coil-spring independent suspension and a solid rear axle with leaf springs or coil springs (depending on the specific variant). The 1985 model year saw refinements to the power steering system, reducing feedback while maintaining a "floaty" highway feel that was characteristic of the era's luxury standards.

Advantages: Why the 1985 Somerset Holds Up

Abundant and Affordable Maintenance Parts

Because General Motors produced millions of R-body vehicles, the parts interchangeability is unmatched. Components for the 1985 Somerset are available from a vast network of salvage yards and online marketplaces. This significantly reduces the total cost of ownership (TCO) compared to contemporary European rivals.

Interior Durability and Space

The Somerset was engineered with a focus on rear-seat passenger comfort. The cabin width, legroom, and trunk capacity exceed those of most mid-size competitors. The 1985 interior features durable vinyl-wrapped dashboard components that, when found in good condition, resist cracking far better than the early plastic interiors of the late 80s.

Powertrain Longevity

The 5.7L V8 (L46) engine is a cast-iron block workhorse. With proper oil change intervals and water pump attention, these engines regularly exceed 200,000 miles. The 3.8L V6 (LG4) offers better fuel economy without the performance penalty seen in later, more complex V6 designs.

Drawbacks: The Pitfalls of Ownership

Corrosion and Rust

Like all GM vehicles of the era, the 1985 Somerset is vulnerable to rust, particularly around the quarter panels, wheel arches, and rocker panels. Buyers in the "rust belt" or coastal regions must inspect these areas rigorously. The "Blue" paint, while aesthetically pleasing, can hide surface rust, requiring detailed paintless dent repair (PDR) techniques or bodywork to identify hidden corrosion.

Fuel Economy and Efficiency

The Somerset is not a fuel-efficient vehicle by modern standards. The V8 variant typically achieves 10-13 MPG in combined driving. In an era of rising fuel costs, this is a significant drawback for daily drivers. The V6 improves this to roughly 15-18 MPG, but still lags behind the diesel or hybrid options available today.

Dated Technology

The 1985 model features a 4-speed automatic transmission (TH400) with fixed shift patterns. There is no electronic shift control, no cruise control in the base models (though it is available as an option), and no power windows or locks in some lower trims. The lack of modern driver-assistance features means the car is a manual-driving experience in a world increasingly dominated by automation.

Comparison: 1985 Somerset vs. Contemporary Rivals

Feature	1985 Buick Somerset	1985 Ford Thunderbird (T-Body)	1985 Chrysler New Yorker
Engine Options	3.8L V6, 5.7L V8	5.0L V8, 5.8L V8	5.9L V8, 6.6L V10 (limited)
Transmission	4-speed Auto (TH400)	4-speed Auto (AOD)	4-speed Auto (973E)
Drive Type	Rear-Wheel Drive (RWD)	Rear-Wheel Drive (RWD)	Rear-Wheel Drive (RWD)
Known Weaknesses	Rust on quarter panels, TH400 torque converter failure	Electrical gremlins, heavy steering feel	Hydraulic steering failures, interior rattle
Parts Availability	Excellent (High Volume)	Very Good	Good
Resale Value	Low-Medium	Medium (Stronger Nostalgia Factor)	Low

Checklist for Potential Buyers

• Inspect the undercarriage for rust, paying special attention to the frame rails and shock towers.
• Check the transmission for smooth shifting; a slipping TH400 is a costly repair.
• Verify that the power steering fluid is red and clean; dark fluid indicates neglect.
• Test all power accessories (windows, seats, locks) for functionality.
• Assess the condition of the interior trim; cracked vinyl is common but cheap to replace.

Frequently Asked Questions

Is the 1985 Buick Somerset a good daily driver?

Yes, provided you are prepared for higher fuel costs and the lack of modern safety features. The ride quality is exceptionally smooth, making it a comfortable cruiser for highway driving. However, it is not recommended for harsh winter climates where road salt accelerates rust, unless the vehicle has been professionally treated and undercoated.

How much does it cost to maintain a 1985 Somerset?

Annual maintenance costs typically range from $500 to $1,500, depending on whether major components like the transmission or cooling system need repair. Parts are inexpensive, but labor costs for specialty shops can add up. Routine maintenance (oil, filters, spark plugs) is very affordable.

What is the "Blue" color code for the 1985 Somerset?

The most common blue shade for the 1985 model year is "Triton Blue Metallic" (Code 33) or "Midnight Blue" (Code 53). These colors were popular for their executive appeal and are widely available in paint and trim restoration kits today. Verify the specific code on the vehicle's placard under the hood for accurate matching.