The Fiat Uno 1.7 D, produced from 1995 to 2002, represents a significant iteration of Fiat’s popular supermini, the Uno. This variant, powered by a 1.7-liter diesel engine producing 58 horsepower, was primarily aimed at markets where fuel efficiency and low running costs were paramount. It occupied a position as the entry-level diesel offering within the Uno range, appealing to budget-conscious buyers and those requiring a practical, economical vehicle for daily commuting. The Uno, internally designated as the Project 146, was a groundbreaking vehicle for Fiat, known for its spacious interior and innovative design for its size. The 1.7D model continued this tradition, offering a surprisingly roomy cabin and a functional hatchback body style available in both 3 and 5-door configurations.
Technical Specifications
| Brand | Fiat |
| Model | UNO |
| Generation | UNO |
| Type (Engine) | 1.7 D (58 Hp) |
| Start of production | 1995 year |
| End of production | 2002 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 3-5 |
| Fuel consumption (urban) | 6 l/100 km (39.2 US mpg, 47.1 UK mpg, 16.7 km/l) |
| Fuel consumption (extra urban) | 4.4 l/100 km (53.5 US mpg, 64.2 UK mpg, 22.7 km/l) |
| Fuel consumption (combined) | 6.2 l/100 km (37.9 US mpg, 45.6 UK mpg, 16.1 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 15.9 sec |
| Acceleration 0 – 62 mph | 15.9 sec |
| Acceleration 0 – 60 mph | 15.1 sec |
| Maximum speed | 155 km/h (96.31 mph) |
| Weight-to-power ratio | 15 kg/Hp, 66.7 Hp/tonne |
| Weight-to-torque ratio | 8.7 kg/Nm, 114.9 Nm/tonne |
| Power | 58 Hp @ 4600 rpm |
| Power per litre | 34.2 Hp/l |
| Torque | 100 Nm @ 2900 rpm (73.76 lb.-ft. @ 2900 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 146 B2.000 |
| Engine displacement | 1698 cm3 (103.62 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82.6 mm (3.25 in.) |
| Piston Stroke | 79.2 mm (3.12 in.) |
| Compression ratio | 20:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4.1 l (4.33 US qt | 3.61 UK qt) |
| Coolant | 8.9 l (9.4 US qt | 7.83 UK qt) |
| Kerb Weight | 870 kg (1918.02 lbs.) |
| Max. weight | 1320 kg (2910.1 lbs.) |
| Max load | 450 kg (992.08 lbs.) |
| Trunk (boot) space – minimum | 270 l (9.53 cu. ft.) |
| Trunk (boot) space – maximum | 970 l (34.26 cu. ft.) |
| Fuel tank capacity | 40 l (10.57 US gal | 8.8 UK gal) |
| Length | 3690 mm (145.28 in.) |
| Width | 1560 mm (61.42 in.) |
| Height | 1420 mm (55.91 in.) |
| Wheelbase | 2360 mm (92.91 in.) |
| Front track | 1340 mm (52.76 in.) |
| Rear (Back) track | 1300 mm (51.18 in.) |
| Minimum turning circle | 9.8 m (32.15 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 | Coil spring |
| Rear suspension | Spring Strut |
| Front brakes | Disc |
| Rear brakes | Drum |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 155/70 R13 |
Powertrain & Engine Architecture
The heart of the Uno 1.7 D is the 146 B2.000 engine, a 1.7-liter inline-four diesel. This engine utilizes a precombustion chamber injection system, a common design for diesel engines of the era. This system involves injecting fuel into a precombustion chamber, where it partially ignites, then ignites the main combustion chamber. This design aids in smoother combustion and reduced engine noise compared to direct injection systems. The engine features two valves per cylinder and a relatively low compression ratio of 20:1, contributing to its durability and ability to run on lower-quality diesel fuel. The 5-speed manual transmission was the only gearbox option available with this engine, prioritizing fuel economy over outright performance. The transmission’s gear ratios were geared towards maximizing efficiency, with a taller final drive to keep engine speeds low during highway cruising.
Driving Characteristics
The Uno 1.7 D was never intended to be a performance car. With only 58 horsepower, acceleration was leisurely, taking approximately 15.9 seconds to reach 62 mph. However, the engine’s 100 Nm (73.76 lb-ft) of torque, available at 2900 rpm, provided adequate pulling power for everyday driving. The car felt most comfortable at lower speeds, making it well-suited for urban environments. The manual transmission, while not sporty, was precise and easy to operate. Compared to higher-spec Uno models with larger gasoline engines, the 1.7 D offered a significantly more relaxed driving experience, prioritizing fuel economy and low-speed usability. The relatively soft suspension setup provided a comfortable ride, although it did result in noticeable body roll during cornering.
Equipment & Trim Levels
The Uno 1.7 D typically came with a basic level of equipment, reflecting its position as an entry-level model. Standard features generally included cloth upholstery, a basic dashboard layout, and manual windows and door locks. Power steering was often included, but air conditioning and central locking were typically optional extras. Interior trim was functional and durable, designed to withstand the rigors of daily use. Optional extras could include upgraded stereo systems, alloy wheels, and different exterior color options. The focus was on providing a practical and affordable vehicle, rather than luxury or advanced features.
Chassis & Braking
The Uno 1.7 D utilized a simple yet effective chassis design. Front suspension consisted of coil springs, while the rear employed a spring strut setup. Brakes were discs on the front wheels and drums on the rear, a common configuration for vehicles in this price range. The hydraulic steering provided reasonable maneuverability, although it lacked the precision of more modern steering systems. The car’s relatively light weight (870 kg / 1918 lbs) helped to compensate for the modest braking performance. Stabilizer bars were typically absent on the base 1.7 D model, contributing to the car’s softer ride but also increasing body roll.
Market Reception & Comparison
The Fiat Uno 1.7 D was generally well-received in markets where fuel economy was a primary concern. Critics praised its practicality, spacious interior, and low running costs. However, its lack of performance and basic equipment levels were often noted. Compared to other Uno variants, such as the 1.4-liter gasoline models, the 1.7 D offered significantly better fuel economy but at the expense of acceleration and refinement. Against competitors like the Peugeot 205 and Renault Clio diesel models, the Uno 1.7 D offered a competitive price point and a reputation for reliability.
Legacy
The Fiat Uno 1.7 D powertrain, while not known for groundbreaking innovation, proved to be remarkably durable and reliable. Many examples remain on the road today, testament to the engine’s robust construction and relatively simple design. In the used car market, the Uno 1.7 D is often sought after by those looking for an affordable and economical vehicle for short commutes or as a first car. Maintenance is generally straightforward and inexpensive, thanks to the engine’s simplicity and the widespread availability of spare parts. While it may not offer the performance or features of more modern vehicles, the Uno 1.7 D remains a practical and dependable choice for budget-conscious buyers.
