The Mazda 626 IV (GE) 2.0 D GLX Comprex, produced between 1992 and 1997, represented a significant offering in Mazda’s lineup during the early to mid-1990s. This variant, powered by a 2.0-liter diesel engine producing 75 horsepower, was positioned as an economy-focused trim within the broader GE generation of the 626. The GE series, sold globally, aimed to provide a comfortable and reliable mid-size sedan, and the 2.0 D GLX Comprex catered to buyers prioritizing fuel efficiency and practicality over outright performance. It was a key model in the European and Asian markets, where diesel engines were more popular than in the United States.
Technical Specifications
| Brand | Mazda |
| Model | 626 |
| Generation | 626 IV (GE) |
| Type | 2.0 D GLX Comprex (75 Hp) |
| Start of production | 1992 |
| End of production | 1997 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 6.8 l/100 km (34.6 US mpg, 41.5 UK mpg, 14.7 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 14.7 sec |
| Acceleration 0 – 62 mph | 14.7 sec |
| Acceleration 0 – 60 mph | 14 sec |
| Maximum speed | 161 km/h (100.04 mph) |
| Weight-to-power ratio | 16.9 kg/Hp (59.3 Hp/tonne) |
| Weight-to-torque ratio | 7.5 kg/Nm (133.6 Nm/tonne) |
| Power | 75 Hp @ 4000 rpm |
| Power per litre | 37.5 Hp/l |
| Torque | 169 Nm @ 2000 rpm (124.65 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | RF55 |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 86 mm (3.39 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 21.1:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Naturally Aspirated |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Coolant capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Kerb Weight | 1265 kg (2788.85 lbs.) |
| Max. weight | 1710 kg (3769.9 lbs.) |
| Max load | 445 kg (981.06 lbs.) |
| Trunk (boot) space – minimum | 452 l (15.96 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Length | 4700 mm (185.04 in.) |
| Width | 1750 mm (68.9 in.) |
| Height | 1400 mm (55.12 in.) |
| Wheelbase | 2610 mm (102.76 in.) |
| Front track | 1500 mm (59.06 in.) |
| Rear track | 1500 mm (59.06 in.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Wishbone |
| Rear suspension | Trailing arm |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 195/60 R15 88 H |
| Wheel rims size | 6J x 15 ET 50 |
Powertrain & Engine Architecture
The heart of the 626 2.0 D GLX Comprex is the RF55 engine, a 1.998-liter inline-four diesel. This engine utilized a precombustion chamber injection system, a common technology for diesel engines of the era. This system involved injecting fuel into a small pre-chamber within the cylinder head, where it partially combusted before igniting the main charge in the cylinder. This design aided in smoother combustion and reduced engine noise compared to direct injection systems. The engine featured an overhead camshaft (OHC) valvetrain with two valves per cylinder. The 75 horsepower output at 4000 rpm and 169 Nm (124.65 lb-ft) of torque at 2000 rpm were typical figures for a naturally aspirated diesel of this displacement in the early 1990s. The engine was paired with a five-speed manual transmission, optimized for fuel economy rather than sporty acceleration.
Driving Characteristics
The 626 2.0 D GLX Comprex offered a driving experience focused on practicality and fuel efficiency. Acceleration was modest, with a 0-60 mph time of around 14 seconds and a top speed of 100 mph. The engine’s torque delivery was relatively flat, providing adequate pulling power for everyday driving situations, but lacking the responsiveness of higher-output gasoline engines or even later-generation diesel engines. The five-speed manual transmission allowed drivers to optimize engine speed for fuel economy or to extract the most available power. Compared to the gasoline-powered 626 variants, the diesel offered significantly better fuel economy, but at the expense of performance. It also differed substantially from the later 2.5-liter V6 models, which prioritized power and refinement.
Equipment & Trim Levels
The GLX Comprex trim level represented a mid-range offering within the 626 lineup. Standard equipment typically included power steering, central locking, electric windows, and an AM/FM radio. The interior featured cloth upholstery, and the dashboard layout was functional and straightforward. Optional extras could include air conditioning, a sunroof, and upgraded audio systems. The “Comprex” designation often indicated a specific package of features, varying slightly depending on the market. The interior materials were durable but not luxurious, reflecting the car’s focus on value and practicality.
Chassis & Braking
The 626 2.0 D GLX Comprex utilized a front-engine, front-wheel-drive layout. The suspension consisted of a wishbone setup at the front and a trailing arm arrangement at the rear. Braking was provided by ventilated discs at the front and solid discs at the rear. An anti-lock braking system (ABS) was included as standard equipment, enhancing safety. The chassis was tuned for comfort and stability, prioritizing ride quality over sporty handling. The relatively modest power output of the diesel engine meant that the braking system was generally adequate for the car’s performance capabilities.
Market Reception & Comparison
The Mazda 626 2.0 D GLX Comprex was generally well-received in markets where diesel engines were popular. Critics praised its fuel economy and reliability, but noted its lack of performance compared to gasoline-powered rivals. Compared to other 626 trims, the diesel version offered a lower purchase price and significantly better fuel efficiency, making it an attractive option for drivers covering long distances or prioritizing running costs. However, the slower acceleration and higher engine noise were drawbacks for some buyers. Against competitors like the Ford Mondeo and Opel Vectra, the 626 offered a competitive package in terms of value and reliability.
Legacy
The RF55 diesel engine, while not known for groundbreaking performance, proved to be a durable and reliable powerplant. Many examples of the 626 2.0 D GLX Comprex remain on the road today, testament to its robust construction. In the used car market, these models are often sought after by buyers looking for an affordable and economical vehicle. Maintenance is generally straightforward, although sourcing parts for older diesel engines can sometimes be challenging. The 626 2.0 D GLX Comprex represents a practical and dependable choice for those seeking a classic 1990s sedan with a focus on fuel efficiency and longevity.
