Segment:
Mid-size Sedan (Hybrid Variant)
Competitive Landscape:
Competes with vehicles like Toyota Camry Hybrid, Ford Fusion Hybrid, Hyundai Sonata Hybrid, Chevrolet Malibu Hybrid.
Powertrain Configuration:
Parallel Hybrid System with a gasoline engine and electric motor for improved fuel economy and performance.
Design Philosophy:
Emphasis on sleek styling, comfortable interior, and efficient hybrid technology.
Differentiators:
Kia's 'tiger-nose' grille design, often competitive pricing, and a focus on a driver-centric cabin.
Powertrain:
Engine (2.4L GDI Hybrid), Hybrid System (Motor, Battery, Power Control Unit), Transmission (6-Speed Automatic Dual-Clutch Hybrid Transmission)
Chassis:
Suspension (Front & Rear), Steering, Brakes (Hydraulic, ABS, ESC, EPB)
Electrical:
Body Control Module (BCM), Powertrain Control Module (PCM), Hybrid Control Module (HCM), Lighting, HVAC Controls, Audio System, Navigation, Power Accessories, Wiring Diagrams
Body:
Exterior Body Panels, Interior Trim, Doors, Windows, Seats, Restraint Systems (Airbags, Seatbelts)
Maintenance:
Scheduled Maintenance, Fluid Changes (Engine Oil, Coolant, Brake Fluid, Transmission Fluid), Filter Replacements (Oil, Air, Cabin), Inspections
Diagnostics:
Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Fault Finding Procedures, Component Testing
Repair:
Engine Overhaul, Transmission Rebuild, Suspension Component Replacement, Brake System Service, Electrical Component Repair/Replacement, Body Panel Repair
Special Procedures:
Hybrid System High-Voltage Component Servicing, Battery Pack Diagnosis and Replacement, Power Control Unit Calibration, Regenerative Braking System Service
Depth:
Comprehensive (from basic checks to full component rebuilds and diagnostics)
Engine Code:
G4KK (2.4L Hybrid GDI)
Engine Type:
Inline 4-cylinder, Gasoline Direct Injection (GDI)
Displacement:
2359 cc (2.4 Liters)
Bore X Stroke:
87.0 mm x 97.0 mm
Compression Ratio:
12.0:1
Valve Train:
DOHC, 4 valves per cylinder, Dual Continuously Variable Valve Timing (CVVT)
Combined System Horsepower:
Approximately 206 hp (154 kW)
Gasoline Engine Horsepower:
Approximately 159 hp @ 5500 rpm
Gasoline Engine Torque:
Approximately 154 lb-ft @ 4500 rpm
Electric Motor Horsepower:
Approximately 47 hp (35 kW)
Electric Motor Torque:
Approximately 151 lb-ft
Fuel Delivery:
Gasoline Direct Injection (GDI)
Fuel Type:
Unleaded Gasoline (87 Octane Recommended)
Hybrid Battery Type:
Lithium Polymer (Li-Poly)
Hybrid Battery Capacity:
Approx. 5.3 Ah (Total capacity depends on configuration)
Power Control Unit:
Integrated with hybrid system for power flow management
Type:
6-Speed Automatic Hybrid Transmission (6AT) with Integrated Electric Motor
Optional Transmissions:
N/A (Only Hybrid Automatic)
Hybrid Driving Modes:
EV Mode, Hybrid Driving, Eco Mode, Sport Mode
Transmission Fluid Type:
Kia ATF SP-IV RR or equivalent (Refer to manual for exact part number and specific type)
Transmission Fluid Capacity:
Approx. 7.0 - 8.0 Liters (Consult manual for specific drain/fill vs. overhaul capacity)
Length:
191.1 inches (4854 mm)
Width:
72.0 inches (1829 mm)
Height:
57.9 inches (1471 mm)
Wheelbase:
110.0 inches (2794 mm)
Front Headroom:
Approx. 40.0 inches
Front Legroom:
Approx. 45.5 inches
Rear Headroom:
Approx. 37.8 inches
Rear Legroom:
Approx. 35.4 inches
Cargo Volume Seats Up:
Approx. 15.4 cu ft (Hybrid configuration may reduce space compared to non-hybrid)
Curb Weight:
Approx. 3500-3700 lbs (Varies by trim and options)
Gross Vehicle Weight Rating:
Consult specific vehicle VIN or manual.
Standard Wheel Size:
17-inch Alloy
Optional Wheel Size:
18-inch Alloy
Standard Tire Size:
215/55R17
Wheel Bolt Pattern:
5x114.3 mm (5x4.5 inches)
Lug Nut Torque:
90 lb-ft (122 Nm) (Verify in manual)
NHTSA Overall Rating:
5-Star (for 2015 Optima, specific hybrid ratings may vary slightly; typically excellent)
IIHS Top Safety Pick:
Yes (Often received 'Good' ratings in crash tests)
Electronic Stability Control:
Standard (ESC)
Antilock Braking System:
Standard (ABS)
Traction Control System:
Standard (TCS)
Electronic Brake Force Distribution:
Standard (EBD)
Brake Assist:
Standard (BAS)
Hill Start Assist Control:
Standard (HAC)
Airbags:
Front, Side Impact, Curtain, Driver's Knee Airbags
Seatbelts:
Pretensioners, Load Limiters, Adjustable Upper Anchors
Child Seat Anchors:
LATCH (Lower Anchors and Tethers for CHildren) System
Backup Camera:
Standard on most trims
Blind Spot Detection:
Optional on EX trim, standard on SX Limited
Rear Cross Traffic Alert:
Optional on EX trim, standard on SX Limited
Parking Assist Sensors:
Optional
Display Size:
Available 4.3-inch or 8-inch Touchscreen Display
Audio System:
Infinity Premium Audio System with 12 speakers (optional)
Navigation:
Available UVO eServices Infotainment System with Navigation
Smartphone Integration:
Bluetooth Hands-Free Connectivity, USB/Auxiliary Input
Adaptive Cruise Control:
Not available on this model year.
Lane Departure Warning:
Not available on this model year.
Forward Collision Warning:
Not available on this model year.
Smartphone Integration Advanced:
UVO eServices system offered basic telematics and remote functions.
Engine Oil Change:
Every 7,500 miles or 12 months, whichever comes first (using synthetic oil). Check manual for specific conditions affecting intervals.
Engine Air Filter:
Inspect every 7,500 miles, replace as needed (typically every 15,000-30,000 miles).
Cabin Air Filter:
Inspect every 7,500 miles, replace as needed (typically every 15,000-20,000 miles).
Coolant Replacement:
First replacement at 60,000 miles, then every 30,000 miles thereafter (for the hybrid system coolant, specific intervals may vary).
Brake Fluid Replacement:
Every 2 years or 30,000 miles (whichever comes first).
Engine Oil Type:
SAE 0W-30, API SN PLUS or ILSAC GF-6A certified synthetic oil (Verify in owner's manual for precise specification and quantity).
Engine Oil Capacity:
Approx. 4.8 US quarts (4.5 Liters) with filter change (verify).
Coolant Type:
Ethylene Glycol-based, Green or equivalent (Kia Genuine Long Life Coolant - Consult manual for specific P/N and type).
Brake Fluid Type:
DOT 3 or DOT 4 (Verify in owner's manual).
Hybrid Battery Longevity:
While generally reliable, hybrid battery degradation over extended periods can be a concern, though Kia typically offers good battery warranties.
Transmission Smoothness:
Some owners have reported occasional hesitation or rough shifts, especially in older models. Updates and fluid services are key.
HVAC System:
Occasional issues with blower motor or compressor, common for many vehicles.
Infotainment System:
Early software glitches or freezing issues can occur, often resolved with software updates.
Oil Filter Example:
Kia Genuine Part Number 26300-35056 (verify for 2015 Optima Hybrid).
Manufacturer:
Kia Corporation (South Korea)
Generation:
Second Generation (JF) Optima (Hybrid variant for this generation)
Introduction Year:
The Optima was introduced globally in 2000. The JF generation debuted for the 2011 model year (as a 2011 model), with the hybrid variant introduced shortly after.
Manufacturing Location:
Hwaseong, South Korea; West Point, Georgia, USA (for North American market)
