The Peugeot 405 1.9 Diesel, producing 69 horsepower, was a mainstay of the 405 range from 1988 to 1992. Positioned as the entry-level engine option, it catered to buyers prioritizing fuel economy and practicality over outright performance. This variant, designated within the 15B generation of the 405, played a significant role in establishing the model’s reputation for reliability and affordability, particularly in European markets where diesel engines were highly favored. While not a performance leader, the 1.9 Diesel offered a durable and economical transportation solution for families and businesses alike.
Technical Specifications
| Brand | Peugeot |
| Model | 405 |
| Generation | 405 I (15B) |
| Type (Engine) | 1.9 Diesel (69 Hp) |
| Start of production | 1988 |
| End of production | 1992 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7 l/100 km (33.6 US mpg, 40.4 UK mpg, 14.3 km/l) |
| Fuel consumption (extra urban) | 4.6 l/100 km (51.1 US mpg, 61.4 UK mpg, 21.7 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 16 sec |
| Acceleration 0 – 62 mph | 16 sec |
| Acceleration 0 – 60 mph | 15.2 sec |
| Maximum speed | 165 km/h (102.53 mph) |
| Weight-to-power ratio | 15.1 kg/Hp, 66 Hp/tonne |
| Weight-to-torque ratio | 8.7 kg/Nm, 114.8 Nm/tonne |
| Power | 69 Hp @ 4600 rpm |
| Power per litre | 36.2 Hp/l |
| Torque | 120 Nm @ 2000 rpm (88.51 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | D9B XUD9A |
| Engine displacement | 1905 cm3 (116.25 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 88 mm (3.46 in.) |
| Compression ratio | 22.5:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHC |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant | 7.8 l (8.24 US qt | 6.86 UK qt) |
| Kerb Weight | 1045 kg (2303.83 lbs.) |
| Max. weight | 1560 kg (3439.21 lbs.) |
| Max load | 515 kg (1135.38 lbs.) |
| Trunk (boot) space – minimum | 470 l (16.6 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Permitted trailer load with brakes (12%) | 1200 kg (2645.55 lbs.) |
| Length | 4408 mm (173.54 in.) |
| Width | 1714 mm (67.48 in.) |
| Height | 1406 mm (55.35 in.) |
| Wheelbase | 2669 mm (105.08 in.) |
| Front track | 1450 mm (57.09 in.) |
| Rear (Back) track | 1443 mm (56.81 in.) |
| Front overhang | 817 mm (32.17 in.) |
| Rear overhang | 922 mm (36.3 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle (turning diameter) | 10.55 m (34.61 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 suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Torsion |
| Front brakes | Disc |
| Rear brakes | Drum |
| Steering type | Steering rack and pinion |
| Tires size | 175/70 R14 |
| Wheel rims size | 14 |
Powertrain & Engine Architecture
The heart of the 405 1.9 Diesel was the D9B engine, a member of Peugeot’s XUD9 family of diesel engines. This 1.9-liter inline-four cylinder engine utilized precombustion chamber injection, a common diesel technology of the era. This system involved injecting fuel into a precombustion chamber connected to the main cylinder, promoting more complete combustion. The engine featured an overhead camshaft (OHC) valvetrain with two valves per cylinder. The XUD9 engine was known for its robust construction and relatively simple design, contributing to its longevity. The 69 horsepower output was achieved at 4600 rpm, while peak torque of 120 Nm (88.51 lb-ft) arrived at 2000 rpm. The engine was transversely mounted in the front of the vehicle, driving the front wheels. The standard transmission was a five-speed manual gearbox, optimized for fuel efficiency rather than rapid acceleration.
Driving Characteristics
The 405 1.9 Diesel Automatic offered a decidedly unhurried driving experience. Acceleration was modest, taking around 16 seconds to reach 100 km/h (62 mph). The focus was on providing adequate power for everyday driving, rather than sporty performance. The five-speed manual transmission helped to maximize fuel economy, but the engine lacked the responsiveness of higher-output versions. The gear ratios were spaced to prioritize fuel efficiency and maintainability. Compared to the more powerful 1.6 or 2.0-liter gasoline engines, or even the later 1.9 TDI diesel, the 1.9 Diesel felt significantly slower. However, it offered a smoother and quieter ride than some of its competitors, and its torque delivery made it reasonably capable for hauling passengers and cargo.
Equipment & Trim Levels
The 1.9 Diesel typically represented the base trim level of the 405 range. Standard equipment generally included basic cloth upholstery, a simple dashboard layout, and manual windows and door locks. Power steering was often an optional extra, as were features like central locking and an upgraded stereo system. The interior was functional and durable, prioritizing practicality over luxury. Higher trim levels, such as the GR or SR, added features like electric windows, upgraded interior trim, and alloy wheels. The 1.9 Diesel was often seen as a workhorse model, frequently purchased by fleet operators and those seeking a reliable and economical vehicle.
Chassis & Braking
The 405 1.9 Diesel utilized an independent McPherson strut front suspension with a coil spring and anti-roll bar, providing a comfortable ride and reasonable handling. The rear suspension employed a torsion beam setup, which was cost-effective and space-efficient. Braking was typically accomplished with disc brakes on the front wheels and drum brakes on the rear. This configuration was common for vehicles in this price range during the late 1980s and early 1990s. The steering was a rack and pinion system, offering precise control. The 175/70 R14 tires provided adequate grip for everyday driving conditions.
Market Reception & Comparison
The Peugeot 405 1.9 Diesel was well-received in markets where diesel fuel was affordable and readily available, particularly in Europe. Critics praised its fuel economy and reliability, but noted its lack of performance. Compared to the gasoline-powered 405 models, the diesel offered significantly better fuel efficiency but at the cost of acceleration and refinement. The 1.9 TDI version, introduced later in the 405’s lifecycle, offered a significant performance upgrade while maintaining good fuel economy, making it a more desirable option for those seeking a balance between the two. However, the 1.9 Diesel remained a popular choice for budget-conscious buyers and those prioritizing long-term durability.
Legacy
The Peugeot 405 1.9 Diesel powertrain has proven to be remarkably durable over the long term. Many examples are still on the road today, testament to the robust construction of the XUD9 engine. While maintenance costs can increase with age, the engine is relatively simple to repair, and spare parts are still available. In the used car market, the 405 1.9 Diesel is often sought after by enthusiasts and those looking for a classic, reliable, and economical vehicle. It represents a significant chapter in Peugeot’s history, embodying the brand’s commitment to practicality and affordability.
