🏷️ Basic Information

Make:

Kia

Model:

Optima

Year:

2007

Generation:

Second Generation (MG)

Platform Code:

MG

👋 Introduction

Vehicle Segment:

Mid-size sedan, popular in the family and commuter car segments

Key Competitors:

Honda Accord, Toyota Camry, Nissan Altima, Ford Fusion, Chevrolet Malibu

Design Philosophy:

Stylish and modern design, emphasis on value and features for the price point

Target Audience:

Families, young professionals, budget-conscious consumers seeking a reliable and well-equipped sedan

📋 Manual Details

Geographic Coverage:

Global (likely North American market focus based on typical manual distribution)

Estimated Page Count:

Over 1500 pages (typical for a comprehensive factory service manual)

Type:

Factory Service and Repair Workshop Manual

Language:

English

Format:

PDF (Downloadable)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, valve train, crankshaft, pistons, connecting rods, lubrication system, cooling system, timing system (belts/chains), engine mounts

Engine Management:

Fuel system, ignition system, emissions control system (EVAP, EGR), air intake system, exhaust system, engine control module (ECM) diagnostics and reprogramming

Transmission Manual:

Manual transmission (M5CF1) removal, installation, overhaul, internal components, shift mechanism, clutch system

Transmission Automatic:

Automatic transmission (e.g., F4A51, A5HF1) removal, installation, overhaul, hydraulic control system, torque converter, electronic controls

Drivetrain:

Front-wheel drive system, drive shafts, constant velocity (CV) joints, differential

Suspension:

Front suspension (MacPherson struts, control arms), rear suspension (multi-link), shock absorbers, springs, bushings, wheel alignment specifications

Steering:

Power steering system (hydraulic/electric), steering rack, tie rods, steering column, power steering fluid specifications

Brakes:

Front and rear brake systems (disc brakes), brake fluid type (DOT 3/4), anti-lock braking system (ABS) components and diagnostics, parking brake

Electrical System:

Battery, charging system (alternator), starting system (starter motor), fuses, relays, wiring diagrams, lighting system (headlights, taillights, interior lights)

Body And Chassis:

Body panels, doors, windows, hood, trunk, bumpers, interior trim, structural components, rust prevention, chassis repair

HVAC:

Heating, ventilation, and air conditioning (HVAC) system, refrigerant type (R134a), AC compressor, condenser, evaporator, blower motor, climate control module

Restraint Systems:

Airbag system (SRS), seat belt systems, airbag control module, sensor locations and replacement

Preventive Maintenance:

Oil changes, filter replacements (oil, air, cabin), fluid checks and top-offs, spark plug replacement, belt inspection and replacement, brake fluid flush, coolant flush

Troubleshooting:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting, electrical system diagnostics, engine performance issues, transmission problems

Repair And Overhaul:

Engine component replacement (e.g., head gasket, piston rings), transmission overhaul, brake caliper replacement, suspension component replacement, steering rack replacement, fuel injector testing and replacement

Component Removal And Installation:

Detailed steps for removing and installing major components like engine, transmission, suspension parts, body panels, interior trim, HVAC components, electrical modules

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all vehicle systems, including component locations and connector pinouts

Diagnostic Procedures:

Specific diagnostic routines for various systems using diagnostic scan tools, multimeters, and specialized equipment

Depth Of Information:

Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds and complex electrical diagnostics

Diagnostic Capabilities:

Advanced diagnostic procedures, including reference values, signal analysis, and troubleshooting logic for electronic control units (ECUs)

Special Tools Required:

Identification and usage of specialized tools required for specific repair and diagnostic procedures

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content for quick information retrieval

Printability:

Printable pages for hands-on workshop use

Digital Binding:

N/A (Digital Download)

Digital Paper Type:

N/A (Digital Download)

Manual Completeness:

Complete Factory Service Manual, including all sections and supplements for the model year

⚙️ Engine Specifications

Engine Code 1:

G4GC (2.0L CVVT DOHC)

Engine Displacement 1:

1998 cc (2.0 Liters)

Engine Cylinders 1:

4

Engine Configuration 1:

Inline-4

Engine Horsepower 1:

~135-140 hp @ 6000 rpm (estimated)

Engine Torque 1:

~136-140 lb-ft @ 4500 rpm (estimated)

Engine Block Material 1:

Aluminum Alloy

Engine Head Material 1:

Aluminum Alloy

Engine Valvetrain 1:

DOHC, 16 valves, CVVT (Continuously Variable Valve Timing)

Engine Fuel Delivery 1:

Multi-point Fuel Injection (MPI)

Engine Ignition System 1:

Electronic Ignition (Distributorless)

Engine Code 2:

G6CU (2.7L V6 CVVT DOHC)

Engine Displacement 2:

2656 cc (2.7 Liters)

Engine Cylinders 2:

6

Engine Configuration 2:

V-6

Engine Horsepower 2:

~180-185 hp @ 6000 rpm (estimated)

Engine Torque 2:

~185-190 lb-ft @ 4500 rpm (estimated)

Engine Block Material 2:

Aluminum Alloy

Engine Head Material 2:

Aluminum Alloy

Engine Valvetrain 2:

DOHC, 24 valves, CVVT (Continuously Variable Valve Timing)

Engine Fuel Delivery 2:

Multi-point Fuel Injection (MPI)

Engine Ignition System 2:

Electronic Ignition (Distributorless)

Fuel Type:

Unleaded Gasoline

Fuel Tank Capacity:

Approx. 15.2 gallons (57.5 Liters)

🔧 Transmission

Transmission Type Standard:

5-speed Manual Transmission (M5CF1)

Transmission Type Optional:

4-speed Automatic Transmission (F4A51) for 2.0L, 5-speed Automatic Transmission (A5HF1) for 2.7L V6

Drive Layout:

Front-Wheel Drive (FWD)

Manual Transmission Fluid:

API GL-4, SAE 75W-90 (Check manual for specific OEM spec)

Automatic Transmission Fluid:

SP-III (Kia/Hyundai Genuine ATF) or equivalent meeting the specification

📐 Dimensions

Length:

Approx. 189.2 inches (4805 mm)

Width:

Approx. 72.4 inches (1839 mm)

Height:

Approx. 57.5 inches (1460 mm)

Wheelbase:

Approx. 107.1 inches (2720 mm)

Front Headroom:

Approx. 39.4 inches (1001 mm)

Rear Headroom:

Approx. 37.7 inches (957 mm)

Front Legroom:

Approx. 45.5 inches (1156 mm)

Rear Legroom:

Approx. 37.1 inches (943 mm)

Trunk Volume:

Approx. 15.9 cubic feet (450 Liters)

Curb Weight:

Approx. 3150 - 3400 lbs (1429 - 1542 kg) depending on engine and trim

🛡️ Safety Features

NHTSA Front Driver Crash Rating:

4 stars (for 2007 model)

NHTSA Front Passenger Crash Rating:

4 stars (for 2007 model)

IIHS Frontal Offset Rating:

Good (for 2007 model)

ABS:

Standard Anti-lock Braking System

Traction Control:

Available Traction Control System (TCS)

Electronic Stability Control:

Available Electronic Stability Control (ESC)

Airbags Front:

Dual front airbags

Airbags Side:

Front side-impact airbags

Airbags Curtain:

Available front and rear side-curtain airbags

Seatbelts:

3-point seatbelts with pretensioners and load limiters

💡 Technology Features

Audio System:

Standard AM/FM/CD audio system, optional premium Infinity sound system with subwoofer

Display:

Optional navigation system with touch screen display

Cruise Control:

Standard cruise control

Parking Assistance:

Available rear parking sensors

Auxiliary Input:

Available auxiliary audio input jack

Bluetooth:

Not available on most 2007 models, introduced in later model years.

🔧 Maintenance

Oil Change Interval Gasoline:

Every 7,500 miles (12,000 km) or 6 months (check manual for specific driving conditions)

Air Filter Replacement:

Every 30,000 miles (48,000 km) or as needed based on inspection

Cabin Air Filter Replacement:

Every 15,000 miles (24,000 km) or annually

Spark Plug Replacement 2.0L:

Approx. 100,000 miles (160,000 km) for Iridium type plugs

Spark Plug Replacement 2.7L V6:

Approx. 100,000 miles (160,000 km) for Iridium type plugs

Timing Belt Replacement Note:

Both engines (2.0L and 2.7L) use a timing chain, which generally does not require periodic replacement but should be inspected for wear or noise.

Engine Oil Specification:

API SM or higher, SAE 5W-20 or SAE 5W-30 (Refer to owner's manual for specific viscosity based on temperature)

Engine Oil Capacity 2.0L:

Approx. 4.7 quarts (4.4 Liters) with filter

Engine Oil Capacity 2.7L V6:

Approx. 5.5 quarts (5.2 Liters) with filter

Coolant Type:

Ethylene Glycol based coolant, typically P-HOAT type (Purple) or equivalent meeting the specification

Coolant Capacity:

Approx. 7.5 - 8.0 quarts (7.1 - 7.6 Liters) depending on engine

Common Complaints Engine:

Occasional oil consumption, potential for starter motor issues, catalytic converter issues due to improper maintenance.

Common Complaints Transmission:

Rough shifting or delayed engagement in automatic transmissions, potential for clutch wear in manual transmissions.

Common Complaints Suspension:

Front end noise (e.g., clunking) due to worn control arm bushings or ball joints, premature wear of sway bar links.

Common Complaints Electrical:

Power window motor failures, issues with door lock actuators, alternator failure.

Common Complaints HVAC:

HVAC blower motor resistor failure, AC system leaks (compressor seals).

📚 Vehicle History

Manufacturer Origin:

South Korea

Generation Introduction:

The second generation (MG) Optima was introduced for the 2006 model year and produced through 2010.

Design Influence:

Featured a more contemporary and European-influenced design, penned by Peter Schreyer's team.

Manufacturing Locations:

Primarily manufactured at Kia's Hwaseong plant in South Korea.

🏆 Awards & Recognition

IIHS Top Safety Pick:

Not typically awarded this designation for the 2007 model year, but received good ratings in frontal crash tests.

Consumer Reports Reliability:

Variable reliability ratings across different model years and components, with some model years showing above-average reliability.