The Tofas Siena 1.4 i RT (71 hp) was a subcompact sedan produced by the Turkish manufacturer Tofas between 1998 and 2002. Positioned as an entry-level offering within the Siena range, it represented a significant step towards modernizing Tofas’s vehicle lineup. The Siena itself was a rebadged and significantly updated version of the Fiat Siena, benefiting from a collaborative partnership between the two automakers. This variant, with its 1.4-liter engine and five-speed manual transmission, was aimed at budget-conscious buyers seeking a practical and affordable family car in the Turkish market. It played a crucial role in Tofas’s continued success during a period of increasing competition from imported vehicles.
Technical Specifications
| Brand | Tofas |
| Model | Siena |
| Generation | Siena |
| Type (Engine) | 1.4 i RT (71 Hp) |
| Start of production | 1998 |
| End of production | 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 12.9 sec |
| Acceleration 0 – 62 mph | 12.9 sec |
| Acceleration 0 – 60 mph | 12.3 sec |
| Maximum speed | 164 km/h (101.9 mph) |
| Weight-to-power ratio | 14.4 kg/Hp, 69.3 Hp/tonne |
| Weight-to-torque ratio | 9.3 kg/Nm, 107.3 Nm/tonne |
| Power | 71 Hp @ 6000 rpm |
| Power per litre | 51.7 Hp/l |
| Torque | 110 Nm @ 3000 rpm (81.13 lb.-ft. @ 3000 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 1372 cm3 (83.72 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 80.5 mm (3.17 in.) |
| Piston Stroke | 67.4 mm (2.65 in.) |
| Compression ratio | 9.2:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Single-point injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHC |
| Kerb Weight | 1025 kg (2259.74 lbs.) |
| Max. weight | 1510 kg (3328.98 lbs.) |
| Max load | 485 kg (1069.24 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 850 l (30.02 cu. ft.) |
| Fuel tank capacity | 48 l (12.68 US gal | 10.56 UK gal) |
| Length | 4100 mm (161.42 in.) |
| Width | 1626 mm (64.02 in.) |
| Height | 1445 mm (56.89 in.) |
| Wheelbase | 2360 mm (92.91 in.) |
| Front track | 1388 mm (54.65 in.) |
| Rear (Back) track | 1378 mm (54.25 in.) |
| 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 | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 175/65 R14 H |
INTRODUCTION
The Tofas Siena 1.4 i RT, produced from 1998 to 2002, was a key model in Tofas’s efforts to modernize its offerings and compete in the increasingly competitive Turkish automotive market. Based on the Fiat Siena platform (Type 176), the Siena represented a significant upgrade over previous Tofas models, offering improved comfort, safety, and reliability. The “RT” designation indicated a mid-range trim level, offering a balance between affordability and features. This particular variant, powered by a 1.4-liter engine and equipped with a five-speed manual transmission, was designed to appeal to a broad range of buyers, particularly families seeking a practical and economical sedan.
Powertrain & Engine Architecture
The heart of the Siena 1.4 i RT was the 1372cc inline-four cylinder engine. This engine, often referred to by its internal code, was a relatively simple design featuring a single overhead camshaft (OHC) and two valves per cylinder. The fuel system employed single-point fuel injection, a common technology for the time, which provided a compromise between cost and efficiency. While not particularly powerful, the engine was known for its durability and relatively low maintenance requirements. The five-speed manual transmission was a standard feature, offering drivers good control over the engine’s power band. Gear ratios were tuned for fuel economy and everyday drivability rather than outright performance. The engine produced 71 horsepower at 6000 rpm and 110 Nm (81.13 lb-ft) of torque at 3000 rpm.
Driving Characteristics
The Siena 1.4 i RT offered a comfortable, if not particularly exciting, driving experience. Acceleration was modest, with a 0-100 km/h (0-62 mph) time of around 12.9 seconds. The engine felt somewhat strained at higher speeds, and overtaking required careful planning. However, the car was perfectly adequate for city driving and highway cruising at moderate speeds. The five-speed manual transmission allowed drivers to keep the engine in its optimal power range, and the gear ratios were well-suited to the engine’s characteristics. Compared to potential higher-output versions (which weren’t widely available in the Turkish market), the 1.4-liter engine prioritized fuel efficiency and ease of use over outright performance. The steering was light and easy, making it maneuverable in urban environments.
Equipment & Trim Levels
The “RT” trim level of the Siena 1.4 i RT offered a reasonable level of equipment for its price point. Standard features typically included power steering, central locking, and a basic audio system. The interior was finished with durable, though somewhat basic, cloth upholstery. The dashboard layout was functional and straightforward, with easy-to-read gauges. Optional extras included air conditioning, power windows, and upgraded audio systems. The Siena RT aimed to provide essential comfort and convenience features without significantly increasing the vehicle’s cost.
Chassis & Braking
The Siena 1.4 i RT utilized a relatively simple chassis design. Front suspension consisted of coil springs, while the rear suspension also employed coil springs. The front brakes were ventilated discs, providing adequate stopping power, while the rear brakes were drums, a cost-saving measure common in this class of vehicle. The car was equipped with an anti-lock braking system (ABS) as standard, enhancing safety. The suspension was tuned for comfort, providing a reasonably smooth ride over uneven surfaces. Stabilizer bars were present, contributing to improved handling and reduced body roll.
Market Reception & Comparison
The Tofas Siena 1.4 i RT was generally well-received in the Turkish market. Critics praised its affordability, practicality, and reliability. However, some noted its lack of refinement and modest performance. Compared to other trims in the Siena lineup, the 1.4 i RT offered the best balance between price and features. It was significantly more affordable than higher-spec models, making it accessible to a wider range of buyers. Fuel economy was a strong point, making it an attractive option for those seeking a cost-effective vehicle. Reliability was also a key selling point, with the 1.4-liter engine proving to be durable and relatively trouble-free.
Legacy
The Tofas Siena 1.4 i RT remains a relatively common sight on Turkish roads today, a testament to its durability and affordability. The 1.4-liter engine, while not particularly sophisticated, has proven to be remarkably reliable over the long term. Parts availability is generally good, and maintenance costs are relatively low. In the used car market, the Siena 1.4 i RT is valued for its practicality and affordability, making it a popular choice for first-time car buyers and those seeking a dependable and economical vehicle. While it may not offer the performance or refinement of more modern cars, the Siena 1.4 i RT represents a significant chapter in Tofas’s history and a practical transportation solution for many Turkish families.
