Market Segment:
Mid-size sedan, competing in a segment with established players like the Toyota Camry, Honda Accord, and Ford Fusion.
Key Competitors:
Toyota Camry, Honda Accord, Ford Fusion, Nissan Altima, Chevrolet Malibu, Mazda6.
Features At Launch:
Sporty styling, comfortable interior, good value proposition, efficient 2.4L engine option.
Manual Purpose:
To provide a comprehensive guide for technicians and owners to maintain, diagnose, and repair the 2007 Kia Optima.
Value For Buyers:
Empowers owners for DIY repairs, reduces reliance on expensive dealership service, aids professional mechanics with accurate information.
Coverage:
All maintenance, repair, diagnostics, and troubleshooting procedures for the 2007 Kia Optima 2.4L model.
Page Count:
Estimated 1500-2000 pages (typical for a comprehensive factory service manual)
Manual Type:
Factory Service Manual / Repair Manual
Format:
Digital (likely PDF)
Powertrain:
Engine, fuel system, ignition system, exhaust system, cooling system, lubrication system.
Transmission:
Automatic transmission (likely A5HF1) including operation, maintenance, overhaul, and diagnostics.
Chassis:
Suspension, steering, braking system (including ABS), wheels, and tires.
Electrical:
Battery, charging system, starting system, lighting, instruments, body electrical, multiplex communication system (CAN bus).
Body:
Body exterior and interior, doors, windows, seats, HVAC system, safety systems (SRS airbags).
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks, tune-ups, belt replacement.
Repair:
Engine overhaul, transmission rebuild, suspension component replacement, brake pad/rotor replacement, electrical component repair.
Diagnostics:
Troubleshooting guides based on symptoms, diagnostic trouble codes (DTCs), electrical circuit testing, component testing.
Specifications:
Torque specifications, clearance measurements, fluid capacities, diagnostic parameters.
Depth:
Comprehensive, covering detailed component removal and installation, internal diagnostics, and recalibration procedures.
Engine Type:
Naturally Aspirated Inline 4-Cylinder (DOHC, 16 valves)
Engine Code:
G4KC (Theta II)
Displacement:
2359 cc (2.4 Liters)
Horsepower:
Approx. 160-165 hp @ 5800-6000 rpm
Torque:
Approx. 160-165 lb-ft @ 4000-4200 rpm
Fuel Delivery:
Multi-port Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline (87 octane recommended)
ECU Type:
Siemens VDO (specific model varies)
Emissions Control:
Catalytic Converter, EGR (Exhaust Gas Recirculation)
Transmission Type:
5-speed Automatic Transaxle
Transmission Model:
Likely A5HF1 (Hyundai/Kia manufactured)
Manual Transmission Availability:
Not commonly available for the 2.4L engine in the US market for this year.
Transmission Features:
Electronically controlled, lock-up torque converter, Sportmatic (manual shifting mode).
Automatic Transmission Fluid:
Kia SPI-III or equivalent Dexron III/Mercon.
Length:
Approx. 187.4 inches (4760 mm)
Width:
Approx. 70.7 inches (1795 mm)
Height:
Approx. 58.1 inches (1475 mm)
Wheelbase:
Approx. 107.1 inches (2720 mm)
Curb Weight:
Approx. 3250 - 3350 lbs (1475 - 1520 kg)
Gross Vehicle Weight Rating:
Approx. 4500 lbs (2040 kg)
Trunk Volume:
Approx. 14.7 cubic feet (416 liters)
NHTSA Front Impact:
4 Stars (2007 model)
IIHS Side Impact:
Good (2007 model)
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Often available or standard on higher trims (TCS)
Electronic Stability Control:
Often available or standard on higher trims (ESC/ESP)
Airbags:
Driver and front passenger airbags, front side-impact airbags, side curtain airbags (often available or standard).
Seatbelts:
Three-point seatbelts with pretensioners and load limiters.
Audio System:
Standard AM/FM/CD player with 6 speakers. Optional Infinity audio system with subwoofer and amplifier available on higher trims.
Climate Control:
Manual or Automatic Climate Control (ACC) depending on trim level.
Cruise Control:
Standard cruise control system.
Auxiliary Input:
Often equipped with an auxiliary audio input jack for portable media players.
Keyless Entry:
Standard or optional keyless entry and ignition.
Oil Change Interval:
Every 5,000 miles (8,000 km) or 6 months, whichever comes first.
Engine Air Filter:
Inspect every 15,000 miles (24,000 km), replace as needed.
Cabin Air Filter:
Replace every 15,000 miles (24,000 km) or annually.
Spark Plugs:
Replace every 60,000 miles (96,000 km) (Iridium type recommended).
Timing Belt:
N/A (Engine uses a timing chain)
Engine Oil:
API SN/SP or ILSAC GF-5/GF-6, SAE 5W-20 or 5W-30 (check owner's manual for exact viscosity based on climate).
Coolant:
Hyundai/Kia Long Life Coolant (Green) or equivalent OAT coolant.
Brake Fluid:
DOT 3 or DOT 4
Power Steering Fluid:
MS-5672 (or specified synthetic PSF)
Engine Issues:
Potential for oil consumption on some units, catalytic converter issues, occasional sensor failures (e.g., crankshaft position sensor).
Transmission Issues:
Rough shifting or delayed engagement in some cases, requiring fluid changes or solenoid replacement.
Suspension Issues:
Wear in front control arm bushings and sway bar links can lead to noise.
Electrical Issues:
Occasional issues with power window regulators, interior lights, or sensor faults.
Kia History:
Kia Motors Corporation, founded in 1944, initially produced motorcycles and trucks. It entered the automotive market in the 1970s and has grown into a global automaker known for value and design.
Optima Generations:
The 2007 Optima is part of the second generation (2007-2010), which marked a significant improvement in styling, quality, and performance over its predecessor.
Manufacturing Locations:
Primarily manufactured in South Korea (Hwasung Plant) and also potentially assembled in other locations globally.
Production Period:
2000-2020 (across generations), with the second generation (MS) covering 2005-2010 model years globally.
Initial Reception:
Generally well-received for its styling and value proposition compared to competitors at launch. Praised for improved refinement.
Consumer Reports Reliability:
Reliability ratings varied by year and component, but the 2007 model generally saw improvements over earlier versions.
Emissions Certification:
Meets EPA emissions standards for the model year.
