The Mazda 6 first generation (GG/GY/GG1) 2.0 CD hatchback, produced from 2002 to 2005, represented Mazda’s entry into the competitive mid-size family car segment. This variant, powered by a 2.0-liter turbocharged diesel engine producing 136 horsepower, was primarily aimed at the European market, where diesel engines held a significant share of the automotive landscape. It offered a blend of practicality, fuel efficiency, and a more refined driving experience compared to some of its competitors. The GG/GY platform was a significant step forward for Mazda, moving towards a more sophisticated and modern design language.
Technical Specifications
| Brand | Mazda |
| Model | 6 |
| Generation | 6 I Hatchback (Typ GG/GY/GG1) |
| Type (Engine) | 2.0 CD (136 Hp) |
| Start of production | 2002 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.3 l/100 km (28.3 US mpg, 34 UK mpg, 12 km/l) |
| Fuel consumption (extra urban) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (combined) | 6.5 l/100 km (36.2 US mpg, 43.5 UK mpg, 15.4 km/l) |
| CO2 emissions | 179 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.6 sec |
| Acceleration 0 – 62 mph | 10.6 sec |
| Acceleration 0 – 60 mph | 10.1 sec |
| Maximum speed | 198 km/h (123.03 mph) |
| Emission standard | Euro 3 |
| Weight-to-power ratio | 10.6 kg/Hp, 94.8 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 216 Nm/tonne |
| Power | 136 Hp @ 3500 rpm |
| Power per litre | 68.1 Hp/l |
| Torque | 310 Nm @ 2000 rpm (228.64 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | RF5C |
| 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 | 18.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | SOHC |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1435 kg (3163.63 lbs.) |
| Max. weight | 1960 kg (4321.06 lbs.) |
| Max load | 525 kg (1157.43 lbs.) |
| Trunk (boot) space – minimum | 492 l (17.37 cu. ft.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 UK gal) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 550 kg (1212.54 lbs.) |
| Length | 4680 mm (184.25 in.) |
| Width | 1780 mm (70.08 in.) |
| Height | 1435 mm (56.5 in.) |
| Wheelbase | 2675 mm (105.31 in.) |
| Front track | 1540 mm (60.63 in.) |
| Rear (Back) track | 1540 mm (60.63 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle (turning diameter) | 10.8 m (35.43 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/55 R16 H |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The heart of this Mazda 6 variant is the RF5C 2.0-liter inline-four cylinder diesel engine. This engine utilized a common rail direct injection system, a technology that allowed for precise fuel delivery and improved combustion efficiency. The RF5C featured a single overhead camshaft (SOHC) valvetrain operating four valves per cylinder. A turbocharger with an intercooler was employed to boost power output, delivering 136 horsepower at 3500 rpm and a respectable 310 Nm (228.64 lb.-ft.) of torque at just 2000 rpm. This torque curve provided good low-end responsiveness, making it suitable for everyday driving. The engine’s high compression ratio of 18.3:1 was typical for diesel engines of the era, contributing to its efficiency. The engine was transversely mounted in the front of the vehicle, driving the front wheels.
Driving Characteristics
The 2.0 CD hatchback, with its 136 hp and five-speed manual transmission, offered a balanced driving experience. Acceleration from 0 to 100 km/h (0-62 mph) took around 10.6 seconds, which was adequate for the time but not particularly sporty. The engine’s strong torque output meant that overtaking maneuvers were relatively effortless, even at highway speeds. Compared to the higher-output gasoline variants, the diesel offered superior fuel economy but lacked the same level of outright performance. The five-speed gearbox was well-matched to the engine’s characteristics, providing smooth shifts and allowing the driver to keep the engine in its optimal power band. The ride quality was generally comfortable, although the suspension could feel a little firm on rougher road surfaces.
Equipment & Trim Levels
The 2.0 CD hatchback typically came with a reasonable level of standard equipment. This included power windows, central locking, air conditioning, and an audio system. Higher trim levels offered additional features such as alloy wheels, a sunroof, and upgraded interior upholstery. Interior materials were generally of good quality for the price point, and the dashboard layout was functional and easy to use. Safety features included ABS brakes and front airbags. Optional extras could include a navigation system and leather seats.
Chassis & Braking
The Mazda 6 hatchback featured a MacPherson strut front suspension and a multi-link rear suspension, providing a good balance of ride comfort and handling. The front brakes were ventilated discs, while the rear brakes were solid discs. The ABS anti-lock braking system was standard, enhancing safety during emergency braking situations. The steering was a rack and pinion system, offering precise and responsive control. The 205/55 R16 tires provided adequate grip in most conditions.
Market Reception & Comparison
The Mazda 6 2.0 CD hatchback was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and spacious interior. However, some critics noted that the engine could be a little noisy compared to some of its competitors. Compared to the gasoline-powered variants, the diesel offered significantly better fuel economy, making it a popular choice for drivers who covered long distances. It also provided more torque, which was beneficial for towing or carrying heavy loads. Against rivals like the Ford Mondeo and Volkswagen Passat, the Mazda 6 offered a compelling combination of value, practicality, and driving enjoyment.
Legacy
The RF5C engine, while generally reliable, is now showing its age. Common issues include turbocharger wear and potential problems with the fuel injection system. However, with regular maintenance, these engines can still provide many years of service. The Mazda 6 first generation remains a popular choice among used car buyers, particularly those looking for a practical and fuel-efficient family car. The 2.0 CD hatchback variant offers a good balance of performance, economy, and reliability, making it a worthwhile consideration for those seeking a well-rounded mid-size vehicle.
