The Kia Optima I 1.8 (134 Hp) Automatic, produced between 2000 and 2002, represented Kia’s initial foray into the mid-size sedan segment, specifically targeting the European and Asian markets. Positioned as the entry-level trim within the Optima I range, it offered a more affordable alternative to the higher-specification models. This variant was built on the 1HX0 platform, sharing components with the Hyundai Sonata of the same generation. The Optima aimed to provide a blend of practicality, comfort, and value, challenging established competitors like the Toyota Camry and Honda Accord. It was a crucial model for Kia as they sought to establish a stronger brand presence and reputation for quality.
Technical Specifications
| Brand | Kia |
| Model | Optima |
| Generation | Optima I |
| Type (Engine) | 1.8 (134 Hp) Automatic |
| Start of production | 2000 |
| End of production | 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 10 kg/Hp, 100 Hp/tonne |
| Weight-to-torque ratio | 7.9 kg/Nm, 126.1 Nm/tonne |
| Power | 134 Hp @ 6000 rpm |
| Power per litre | 73 Hp/l |
| Torque | 169 Nm @ 4500 rpm (124.65 lb.-ft. @ 4500 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 1836 cm3 (112.04 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 81.5 mm (3.21 in.) |
| Piston Stroke | 88 mm (3.46 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Kerb Weight | 1340 kg (2954.19 lbs.) |
| Trunk (boot) space – minimum | 479 l (16.92 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4745 mm (186.81 in.) |
| Width | 1815 mm (71.46 in.) |
| Height | 1420 mm (55.91 in.) |
| Wheelbase | 2700 mm (106.3 in.) |
| Front track | 1540 mm (60.63 in.) |
| Rear (Back) track | 1530 mm (60.24 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 | 4 gears, automatic transmission |
| Front suspension | Wishbone |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 195/70 R14 |
| Wheel rims size | 14 |
Powertrain & Engine Architecture
The Kia Optima 1.8 Automatic was powered by Kia’s G4HB engine, a 1.8-liter inline-four cylinder gasoline engine. This engine utilized a multi-point fuel injection system, delivering fuel directly into the intake ports. The engine featured a double overhead camshaft (DOHC) valvetrain, optimizing airflow for improved performance. The engine’s 134 horsepower output at 6000 rpm and 169 Nm (124.65 lb-ft) of torque at 4500 rpm were considered adequate for everyday driving, but not particularly sporty. The engine was paired with a four-speed automatic transmission, chosen for its ease of use and comfort, appealing to a broader customer base. This transmission was a conventional hydraulic automatic, lacking the more advanced features found in later transmissions.
Driving Characteristics
The 1.8L engine and four-speed automatic combination in the Optima I delivered a comfortable, if not exhilarating, driving experience. Acceleration was modest, with a 0-60 mph time estimated around 11-12 seconds. The automatic transmission was tuned for smooth shifts and prioritized fuel economy over aggressive performance. Compared to the later 2.0L and 2.4L engine options, the 1.8L felt noticeably less powerful, particularly when fully loaded or tackling inclines. The gear ratios were spaced to provide reasonable acceleration in city driving, but could feel somewhat strained at highway speeds. The automatic transmission, while convenient, lacked the responsiveness of a manual gearbox, and didn’t offer any manual shift mode.
Equipment & Trim Levels
The 1.8L Automatic Optima typically came with a standard equipment list focused on comfort and convenience. This included air conditioning, power windows and locks, and a basic audio system. Interior upholstery was typically cloth, with a relatively simple dashboard layout. Optional extras included alloy wheels, a sunroof, and an upgraded audio system with a CD player. Safety features were relatively basic for the time, including ABS brakes and dual front airbags. The trim level was generally considered the base model, offering a cost-effective entry point into the Optima range.
Chassis & Braking
The Optima I utilized a front-wheel-drive layout with a MacPherson strut front suspension and a coil spring rear suspension. This setup provided a comfortable ride quality, suitable for everyday commuting. The front brakes were ventilated discs, offering adequate stopping power, while the rear brakes were solid discs. The steering was a rack-and-pinion system with hydraulic power assistance, providing a reasonably responsive feel. The suspension tuning was geared towards comfort rather than sporty handling, resulting in some body roll during cornering. Tire size was typically 195/70 R14, providing a balance of ride comfort and grip.
Market Reception & Comparison
The Kia Optima 1.8 Automatic received mixed reviews from automotive critics. While praised for its value and spacious interior, it was often criticized for its lack of performance and somewhat bland styling. Compared to the higher-trim Optima models with larger engines, the 1.8L Automatic offered significantly less power and a less engaging driving experience. However, it did offer better fuel economy than the more powerful variants. Reliability was generally considered average for the period, with some reports of minor electrical issues. The 1.8L Automatic appealed to buyers prioritizing affordability and practicality over performance.
Legacy
The Kia Optima I 1.8 Automatic, while not a standout performer, played a significant role in establishing Kia as a viable competitor in the mid-size sedan market. The G4HB engine proved to be reasonably durable, and many examples are still on the road today, albeit with high mileage. In the used car market, these Optimas are typically very affordable, making them attractive to budget-conscious buyers. However, potential buyers should be aware of the age-related issues common to vehicles of this era, such as corrosion and wear and tear on suspension components. The Optima I laid the groundwork for the subsequent generations of Optima, which have become increasingly popular and well-regarded.
