1983-1986 Peugeot 604 2.5 TD (90 Hp)

The Peugeot 604 2.5 TD, produced between 1983 and 1986, represented a significant offering in Peugeot’s flagship sedan lineup. Positioned as a more economical alternative to the gasoline-powered versions, the 2.5-liter turbocharged diesel variant aimed to provide long-distance comfort and fuel efficiency, particularly appealing to buyers in European markets where diesel engines were gaining popularity. It was the final iteration of the 604 before production ceased, representing a refinement of the original 1975 design. The 604, as a whole, was Peugeot’s attempt to compete directly with executive saloons from Mercedes-Benz and BMW, offering a blend of French style and engineering.

Technical Specifications

Powertrain & Engine Architecture

The heart of the 604 2.5 TD is the XD3T 152A engine, a 2.5-liter inline-four diesel. This engine was a development of Peugeot’s earlier XD3 series, incorporating a turbocharger to boost power output. The XD3T featured indirect injection, utilizing a Bosch rotary injection pump. This system, while not as refined as later direct injection diesels, provided reliable operation and reasonable fuel economy for the time. The engine’s cylinder head featured a single overhead camshaft operating two valves per cylinder. The turbocharger, a Garrett unit, provided approximately 7.5 psi of boost, significantly increasing power and torque compared to the naturally aspirated XD3 engines. The engine was typically paired with a three-speed automatic transmission, although a five-speed manual was also available, though less common in this configuration. The automatic transmission, while providing convenience, was known to be somewhat sluggish in operation, prioritizing smooth shifts over outright performance. The engine’s robust construction and relatively simple design contributed to its longevity, making it a popular choice for high-mileage drivers.

Driving Characteristics

The 604 2.5 TD Automatic offered a distinctly different driving experience compared to its gasoline-powered siblings or even the manual diesel versions. The 90 horsepower output, while adequate for cruising, didn’t provide particularly brisk acceleration. The three-speed automatic transmission further muted performance, with relatively wide gear ratios. However, the engine’s substantial torque – around 166 lb-ft – was available from low RPMs, making it well-suited for effortless highway driving and tackling inclines. The automatic transmission’s shift points were programmed for economy, meaning the engine often operated at lower RPMs, contributing to good fuel consumption. Compared to the 2.1-liter or 2.8-liter gasoline engines, the 2.5 TD felt considerably slower, but it offered a significant advantage in fuel economy. The manual transmission version, while offering more control, still didn’t transform the 604 into a sporty vehicle; it simply allowed the driver to make better use of the available torque. The 604’s comfortable suspension and hydraulic power steering contributed to a relaxed and refined driving experience, even at lower speeds.

Equipment & Trim Levels

The 604 2.5 TD typically came well-equipped, reflecting its status as a luxury sedan. Standard features included central locking, electric windows, and a high-quality velour upholstery. The dashboard layout was typically wood-veneered, adding to the car’s sophisticated ambiance. Air conditioning was a common option, and many examples were also fitted with a sunroof. Higher trim levels, often denoted by additional chrome trim and upgraded interior materials, were available. The 604 also featured a comprehensive instrument cluster, providing information on engine temperature, fuel level, and other vital parameters. Sound insulation was a priority, contributing to a quiet and comfortable cabin environment. While not as technologically advanced as some of its German rivals, the 604 offered a compelling package of comfort, convenience, and style.

Chassis & Braking

The 604 utilized a robust chassis with independent suspension all around. The front suspension featured MacPherson struts, while the rear employed a semi-trailing arm setup. This configuration provided a comfortable ride and good handling characteristics. The 2.5 TD models typically featured disc brakes on the front wheels and drum brakes on the rear. While the drum brakes were adequate for normal driving, they lacked the stopping power and fade resistance of disc brakes, particularly under heavy use. Power steering was standard, making the car easy to maneuver at low speeds. Stabilizer bars were fitted to both the front and rear axles, helping to reduce body roll during cornering. The 604’s chassis was designed to provide a balance between comfort and handling, prioritizing a smooth and stable ride over sporty dynamics.

Market Reception & Comparison

The Peugeot 604 2.5 TD was generally well-received in European markets, particularly by those seeking a fuel-efficient and comfortable long-distance cruiser. Critics praised the engine’s torque and economy, but some noted the automatic transmission’s sluggishness. Compared to the gasoline-powered 604s, the diesel offered significantly better fuel economy, making it a more practical choice for high-mileage drivers. However, it lacked the refinement and performance of the higher-output gasoline engines. Compared to its rivals, such as the Mercedes-Benz W123 and BMW E28, the 604 offered a more distinctive and stylish design, but it didn’t quite match the build quality or brand prestige of its German competitors. The 2.5 TD was often seen as a more sensible and economical alternative to the more expensive and powerful 604 variants.

Legacy

The Peugeot 604 2.5 TD, while not a high-volume seller, has gained a following among classic car enthusiasts. The XD3T engine is known for its durability and relatively simple maintenance requirements. However, finding parts can be challenging, as production ceased over three decades ago. The automatic transmission, while reliable, can be prone to wear and tear. Today, well-maintained examples of the 604 2.5 TD are becoming increasingly collectible, appealing to those who appreciate its unique blend of French style, engineering, and practicality. The car represents a significant chapter in Peugeot’s history, showcasing the company’s ambition to compete in the executive car segment. Its robust diesel engine and comfortable ride continue to make it a viable option for classic car enthusiasts seeking a distinctive and reliable touring car.