The Kia Optima, launched in 2000, marked a significant step for the South Korean automaker as it sought to gain a foothold in the competitive mid-size sedan segment, with a particular focus on the North American and European markets. The first generation Optima (designated as the Optima I) was produced from 2000 to 2002, offering a range of engine and transmission options. The 2.0-liter, 136 horsepower variant paired with an automatic transmission was positioned as a mainstream offering, balancing affordability with reasonable performance and convenience. This model aimed to appeal to buyers seeking a comfortable and practical family sedan without the higher price tag of more powerful trims.
Technical Specifications
| Brand | Kia |
| Model | Optima |
| Generation | Optima I |
| Type (Engine) | 2.0 (136 Hp) Automatic |
| Start of production | 2000 |
| End of production | 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel consumption (extra urban) | 7.7 l/100 km (30.5 US mpg, 36.7 UK mpg, 13 km/l) |
| Fuel consumption (combined) | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.6 sec |
| Acceleration 0 – 62 mph | 10.6 sec |
| Acceleration 0 – 60 mph | 10.1 sec |
| Maximum speed | 195 km/h (121.17 mph) |
| Weight-to-power ratio | 10.9 kg/Hp, 92 Hp/tonne |
| Weight-to-torque ratio | 8.2 kg/Nm, 121.8 Nm/tonne |
| Power | 136 Hp @ 6000 rpm |
| Power per litre | 68.1 Hp/l |
| Torque | 180 Nm @ 4500 rpm (132.76 lb.-ft. @ 4500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Sirius II / G4JP |
| Engine displacement | 1997 cm3 (121.86 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 85 mm (3.35 in.) |
| Piston Stroke | 88 mm (3.46 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Kerb Weight | 1478 kg (3258.43 lbs.) |
| Max. weight | 1985 kg (4376.18 lbs.) |
| Max load | 507 kg (1117.74 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 | 205/60 R15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The Kia Optima 2.0 Automatic is powered by the Kia Sirius II engine, internally designated as the G4JP. This 1.997-liter inline-four cylinder engine employs a naturally aspirated configuration and a multi-port fuel injection system. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its relatively efficient breathing. A 10:1 compression ratio was typical for engines of this era. The engine produces a peak of 136 horsepower at 6000 rpm, while its 180 Nm (132.76 lb-ft) of torque is delivered at 4500 rpm. The engine is transversely mounted in the front of the vehicle. The four-speed automatic transmission was a common choice for vehicles in this class, prioritizing ease of use over outright performance. It was designed to provide smooth shifts and acceptable acceleration for everyday driving.
Driving Characteristics
The 2.0-liter engine and four-speed automatic transmission combination in the Optima I delivered adequate, but not particularly exciting, performance. Acceleration from 0 to 60 mph took approximately 10.1 seconds, and the top speed was around 121 mph. Compared to manual transmission versions of the same engine, the automatic resulted in a slight performance decrease due to the inherent power losses within the torque converter. The automatic transmission’s gear ratios were tuned for fuel efficiency and comfortable cruising rather than aggressive acceleration. While it lacked the responsiveness of a manual gearbox, it provided a smooth and predictable driving experience, making it well-suited for urban commuting and highway driving. The power delivery was linear, but the engine did require downshifting for quicker overtaking maneuvers.
Equipment & Trim Levels
The 2.0-liter Automatic Optima typically came with a reasonable level of standard equipment. This included power windows, power door locks, air conditioning, and an AM/FM radio with a cassette player. Interior upholstery was typically cloth, and the dashboard featured a straightforward layout with easy-to-use controls. Optional extras included a sunroof, upgraded audio system, and alloy wheels. The trim level for this engine/transmission combination generally fell into the mid-range of the Optima lineup, offering a balance between features and affordability. It was positioned above the base models but below the higher-specification trims with larger engines.
Chassis & Braking
The Optima I utilized a front-wheel-drive layout with a wishbone front suspension and a coil spring rear suspension. This setup provided a comfortable ride quality, although it wasn’t particularly sporty. The front brakes were ventilated discs, offering good stopping power, while the rear brakes were solid discs. An anti-lock braking system (ABS) was standard, enhancing safety. The steering was rack and pinion with hydraulic power assistance, providing a reasonably responsive feel. The standard tire size was 205/60 R15, mounted on 15-inch steel or alloy wheels.
Market Reception & Comparison
The Kia Optima 2.0 Automatic received mixed reviews from automotive critics. It was generally praised for its spacious interior, comfortable ride, and competitive price. However, it was often criticized for its relatively modest performance and somewhat bland styling. Compared to other mid-size sedans of the time, such as the Honda Accord and Toyota Camry, the Optima offered a lower price point but lacked the refinement and driving dynamics of its Japanese rivals. Fuel economy was average for the class, with combined figures around 24.2 US mpg. Reliability was generally considered acceptable, although Kia was still building its reputation for long-term durability at this time.
Legacy
The Kia Optima I, particularly the 2.0-liter Automatic variant, played a crucial role in establishing Kia as a viable competitor in the mid-size sedan market. While not known for exceptional performance or groundbreaking technology, it offered a practical and affordable option for buyers seeking a comfortable and reliable family car. Today, these vehicles are relatively rare and often found in well-maintained condition. The Sirius II engine is generally considered to be a durable unit, although age and mileage can lead to typical wear-and-tear issues. The four-speed automatic transmission is also reasonably reliable, but may require servicing or rebuilding after many years of use. The Optima I represents an important milestone in Kia’s history, marking its transition from a niche automaker to a mainstream player in the global automotive industry.
