The Toyota Aygo 1.4 D-4D (54 hp) was a subcompact city car produced between 2005 and 2007, forming a key part of the first generation Aygo (AB10) lineup. Developed as part of a joint venture between Toyota, Peugeot, and Citroën – resulting in the Peugeot 107 and Citroën C1 – the Aygo was designed to be an affordable and practical vehicle for urban environments. The 1.4 D-4D variant represented the entry-level diesel offering, positioned below the petrol-powered models in terms of performance but offering superior fuel economy. It was primarily sold in European markets where diesel engines held significant popularity due to favorable taxation and fuel costs.
Technical Specifications
| Brand | Toyota |
| Model | Aygo |
| Generation | Aygo (AB10) |
| Type (Engine) | 1.4 D-4D (54 Hp) |
| Start of production | 2005 |
| End of production | 2007 |
| Powertrain Architecture | Internal Combustion Engine |
| Body type | Hatchback |
| Seats | 4 |
| Doors | 5 |
| Fuel consumption (urban) | 5.5 l/100 km (42.8 US mpg) |
| Fuel consumption (extra urban) | 3.4 l/100 km (69.2 US mpg) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 16.8 sec |
| Acceleration 0 – 62 mph | 16.8 sec |
| Acceleration 0 – 60 mph | 16 sec |
| Maximum speed | 154 km/h (95.69 mph) |
| Weight-to-power ratio | 16.5 kg/Hp |
| Weight-to-torque ratio | 6.8 kg/Nm |
| Power | 54 Hp @ 4000 rpm |
| Power per litre | 38.6 Hp/l |
| Torque | 130 Nm @ 1750 rpm (95.88 lb.-ft. @ 1750 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 2WZ-TV |
| Engine displacement | 1398 cm3 (85.31 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 73.7 mm (2.9 in.) |
| Piston Stroke | 82 mm (3.23 in.) |
| Compression ratio | 17.9:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | SOHC |
| Engine oil capacity | 3.8 l (4.02 US qt | 3.34 UK qt) |
| Coolant capacity | 4.4 l (4.65 US qt | 3.87 UK qt) |
| Kerb Weight | 890 kg (1962.11 lbs.) |
| Max. weight | 1245 kg (2744.76 lbs.) |
| Max load | 355 kg (782.64 lbs.) |
| Trunk (boot) space – minimum | 139 l (4.91 cu. ft.) |
| Trunk (boot) space – maximum | 751 l (26.52 cu. ft.) |
| Fuel tank capacity | 35 l (9.25 US gal | 7.7 UK gal) |
| Length | 3405 mm (134.06 in.) |
| Width | 1615 mm (63.58 in.) |
| Height | 1465 mm (57.68 in.) |
| Wheelbase | 2340 mm (92.13 in.) |
| Front track | 1420 mm (55.91 in.) |
| Rear track | 1410 mm (55.51 in.) |
| Minimum turning circle | 9.4 m (30.84 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 5 gears, manual transmission |
| Front suspension | Spring Strut |
| Rear suspension | Torsion |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 155/65 R14 |
INTRODUCTION
The Toyota Aygo 1.4 D-4D, produced from 2005 to 2007, was a crucial variant within the first generation Aygo (AB10) range. Built on the collaborative 1HX0/A3 platform shared with the Peugeot 107 and Citroën C1, the Aygo aimed to provide affordable and reliable transportation. The 1.4 D-4D model specifically targeted buyers seeking the fuel efficiency benefits of a diesel engine in a compact and economical package. It served as the base diesel offering, appealing to those prioritizing running costs over outright performance.
Powertrain & Engine Architecture
The heart of the Aygo 1.4 D-4D is the 2WZ-TV engine, a 1.4-liter inline-four cylinder diesel. This engine utilizes a common rail direct injection system, delivering fuel directly into the combustion chamber at extremely high pressure for improved efficiency and reduced emissions. The engine is turbocharged and intercooled, enhancing power output despite its small displacement. The 2WZ-TV features a single overhead camshaft (SOHC) valvetrain with two valves per cylinder. The engine’s relatively high compression ratio of 17.9:1 contributes to its thermal efficiency. The Aygo 1.4 D-4D was exclusively offered with a five-speed manual transmission, optimized for fuel economy and smooth operation at lower speeds. The transmission’s gear ratios were geared towards maximizing fuel efficiency rather than providing rapid acceleration.
Driving Characteristics
The 54 hp output of the 1.4 D-4D engine translates to modest performance. Acceleration from 0 to 60 mph takes approximately 16 seconds, and the top speed is around 95.69 mph. In real-world driving, the Aygo 1.4 D-4D feels best suited for city commuting and shorter journeys. The engine delivers a usable amount of torque at low RPMs (130 Nm at 1750 rpm), making it relatively easy to navigate urban traffic. However, overtaking maneuvers on highways require careful planning. Compared to the petrol-powered Aygo variants, the 1.4 D-4D offers significantly better fuel economy, but at the expense of acceleration and overall responsiveness. The manual transmission provides a direct connection to the engine, allowing drivers to maximize efficiency through careful gear selection.
Equipment & Trim Levels
The Aygo 1.4 D-4D typically came with a basic level of equipment, reflecting its position as the entry-level diesel model. Standard features generally included power steering, central locking, and an immobilizer. Interior upholstery was typically cloth, and the dashboard featured a simple, functional design. Optional extras, such as air conditioning, electric windows, and a radio/CD player, were available but often added to the vehicle’s cost. The focus was on providing a practical and affordable vehicle, rather than luxurious amenities. Safety features included ABS (Anti-lock Braking System) as standard.
Chassis & Braking
The Aygo 1.4 D-4D utilizes a simple yet effective chassis design. The front suspension consists of MacPherson strut springs, while the rear suspension employs a torsion beam. This setup provides a comfortable ride quality for city driving, although it’s not particularly sporty. The braking system features ventilated discs on the front wheels and drum brakes on the rear. The relatively light weight of the Aygo (890 kg) helps to compensate for the less powerful braking system. The steering is rack and pinion, providing precise and responsive handling.
Market Reception & Comparison
The Toyota Aygo 1.4 D-4D was generally well-received by critics for its fuel efficiency and affordability. However, its limited power output was often noted as a drawback. Compared to the petrol-powered Aygo models, the 1.4 D-4D offered significantly better fuel economy – around 69.2 US mpg on the extra urban cycle – but slower acceleration. Against competitors like the Peugeot 107 and Citroën C1 diesel variants, the Aygo 1.4 D-4D offered a similar level of performance and economy. Reliability was a strong point, consistent with Toyota’s reputation for building durable vehicles.
Legacy
The Toyota Aygo 1.4 D-4D has proven to be a reliable and economical vehicle in the used car market. The 2WZ-TV engine is known for its durability, although regular maintenance is essential to prevent issues. Common issues include turbocharger wear and potential problems with the diesel particulate filter (DPF) if the vehicle is primarily used for short journeys. Today, the Aygo 1.4 D-4D remains a popular choice for budget-conscious buyers seeking a fuel-efficient city car. Its simple design and robust engine make it relatively easy and inexpensive to maintain, ensuring its continued presence on roads throughout Europe.
