1983-1985 Citroen CX I (Phase I ) 25 D Turbo (95 Hp)

The Citroën CX 25 D Turbo, specifically the Phase I variant produced from 1983 to 1985, represented a significant evolution in Citroën’s long tradition of innovative automotive engineering. Positioned as a premium offering within the CX range, the 25 D Turbo aimed to provide a blend of performance and refinement, appealing to buyers seeking a comfortable and capable grand tourer. It was built upon the CX platform (often referred to as the Series II), known for its advanced hydropneumatic suspension and aerodynamic styling. This particular model occupied a middle ground in the CX lineup, offering more power than the naturally aspirated diesel options but remaining more accessible than the flagship 25 GTI Turbo.

Technical Specifications

Introduction

The Citroën CX 25 D Turbo, launched in 1983, was a key variant in the first phase of the CX model range. The CX, introduced in 1974, was intended as a replacement for the venerable DS, continuing Citroën’s tradition of pushing boundaries in automotive technology. The 25 D Turbo specifically aimed to offer a more powerful diesel option for those covering long distances, providing improved acceleration and cruising ability compared to the standard 25 D. It was a popular choice in Europe, particularly in France, where diesel engines were gaining traction due to favorable taxation and fuel economy.

Powertrain & Engine Architecture

At the heart of the CX 25 D Turbo lies the M25-648 engine, a 2.5-liter inline-four diesel. This engine utilizes precombustion chamber injection, a system common in European diesel engines of the era. This system involves a small precombustion chamber connected to the main cylinder, where fuel is injected and ignited by a glow plug, initiating combustion in the main chamber. The addition of a turbocharger significantly boosted power output to 95 horsepower at 3700 rpm and 216 Nm (159.31 lb-ft) of torque at 2000 rpm. The engine’s robust construction and relatively simple design contributed to its longevity. The five-speed manual transmission was standard, providing a good balance between fuel efficiency and performance. While an automatic transmission was available on some CX models, it wasn’t commonly paired with the 25 D Turbo due to concerns about its ability to handle the engine’s torque effectively.

Driving Characteristics

The CX 25 D Turbo offered a distinctly different driving experience compared to its naturally aspirated diesel siblings. The turbocharger provided a noticeable increase in acceleration, making overtaking maneuvers considerably easier. While not a sports car, the 25 D Turbo felt surprisingly capable on the open road. The hydropneumatic suspension, a hallmark of Citroën vehicles, provided an exceptionally smooth and comfortable ride, absorbing bumps and imperfections in the road surface with ease. The steering, while power-assisted, retained a communicative feel, allowing for precise control. The five-speed manual transmission allowed drivers to keep the engine in its optimal power band, maximizing performance and fuel efficiency. Compared to the later 25 GTI Turbo, the 25 D Turbo prioritized usability and fuel economy over outright speed.

Equipment & Trim Levels

The CX 25 D Turbo was generally well-equipped for its time. Standard features typically included power steering, central locking, and comfortable cloth upholstery. The dashboard layout was characteristically Citroën, featuring a unique combination of analog gauges and switches. Optional extras included air conditioning, a sunroof, and upgraded audio systems. The interior trim was generally functional and durable, reflecting the car’s focus on practicality and long-distance comfort. The exterior styling was defined by the CX’s distinctive wedge shape and aerodynamic profile, contributing to its low drag coefficient.

Chassis & Braking

The CX’s chassis was designed to complement its advanced suspension system. The front suspension utilized independent double wishbones, while the rear featured a trailing arm setup. Ventilated disc brakes were fitted to the front wheels, providing ample stopping power, while the rear brakes were also discs, a feature that distinguished it from some lower-spec CX models. The steering system employed a rack and pinion setup, offering precise and responsive handling. The hydropneumatic suspension allowed for self-leveling, maintaining a consistent ride height regardless of load. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.

Market Reception & Comparison

The CX 25 D Turbo was generally well-received by automotive critics. It was praised for its comfortable ride, refined engine, and aerodynamic efficiency. However, some critics noted that the diesel engine could be somewhat noisy and lacked the refinement of some of its competitors. Compared to the naturally aspirated 25 D, the Turbo offered a significant performance boost, making it a more appealing option for drivers who frequently traveled long distances. Against the 25 GTI Turbo, the diesel variant offered superior fuel economy but lacked the GTI’s outright performance. The CX 25 D Turbo represented a compelling alternative to other European grand tourers of the era, such as the Peugeot 505 and the Volvo 240.

Legacy

The Citroën CX 25 D Turbo, while not as widely celebrated as some of its more sporting siblings, remains a respected and sought-after classic car. The M25-648 diesel engine, when properly maintained, proved to be remarkably durable. Today, well-preserved examples of the 25 D Turbo are becoming increasingly rare and valuable. The car’s unique blend of comfort, performance, and innovative technology continues to appeal to enthusiasts who appreciate Citroën’s engineering heritage. Finding parts can be challenging, but a dedicated community of CX owners and specialists ensures that these cars can be kept on the road for years to come. The CX 25 D Turbo stands as a testament to Citroën’s commitment to pushing the boundaries of automotive design and engineering.