🏷️ Basic Information

Make:

Infiniti

Model:

G20

Year:

2001

Generation:

P11

Chassis Code:

P11

Production Code:

RP11

👋 Introduction

Market Position:

The 2001 Infiniti G20 was positioned as a compact luxury sedan, offering a balance of performance, comfort, and value within the premium segment, often competing with entry-level luxury sedans from European and domestic manufacturers.

Competitors:

Key competitors for the 2001 Infiniti G20 included models like the Acura EL/RSX, BMW 3 Series (E36/E46 entry models), Audi A3, Volkswagen Golf GTI, and the domestics like the Cadillac CTS (later models) and Ford Contour.

Infiniti G20 Highlights:

Sporty handling derived from its Nissan Primera platform, comfortable interior, reliable Nissan SR20 engine, and Infiniti's reputation for customer service.

📋 Manual Details

Coverage Areas:

Engine, Transmission, Drivetrain, Brakes, Suspension, Steering, HVAC, Electrical Systems, Body, Interior, Diagnostics, Maintenance

Page Count:

Digital Access (Full Year)

Manual Type:

Service and Repair Manual Software

Language:

English

Format:

Online Software (Web Browser Access)

📖 Manual Coverage

Engine Systems:

Engine mechanical (assembly, disassembly, overhaul), fuel injection, ignition system, cooling system, lubrication system, exhaust system, emissions control, engine management (ECM/ECU).

Transmission Systems:

Automatic transmission (AT) and manual transmission (MT) overhaul, operation, diagnostics, fluid service. Clutch system (for MT).

Drivetrain Systems:

Front-wheel drive (FWD) system, drive shafts, CV joints, differential.

Brake Systems:

Front and rear disc brakes, ABS (Anti-lock Braking System) components, hydraulic system, parking brake.

Suspension Systems:

Front and rear suspension (struts, springs, control arms, bushings), wheel alignment specifications.

Steering Systems:

Power steering system, steering rack, tie rods, steering column.

HVAC Systems:

Heating, Ventilation, and Air Conditioning (HVAC) system components, refrigerant, operation, troubleshooting.

Electrical Systems:

Battery, charging system, starting system, lighting, gauges, instruments, power windows, locks, mirrors, audio system, body control modules, wiring diagrams.

Body Interior:

Body panel removal and installation, interior trim, seats, doors, glass, bumpers.

Maintenance Procedures:

Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, brake pad/rotor replacement, belt inspection/replacement.

Repair Procedures:

Detailed step-by-step repair instructions for all covered systems, including component removal, installation, and adjustments.

Diagnostic Procedures:

Troubleshooting charts, symptom-based diagnostics, diagnostic trouble codes (DTCs) explanation and resolution, sensor testing, actuator testing.

Technical Procedures:

Engine timing, valve adjustment, clutch replacement, brake bleeding, wheel alignment procedures, refrigerant service.

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all vehicle systems, including power distribution, lighting, engine controls, chassis electronics, and accessories.

Depth Of Coverage:

Comprehensive, factory-level detail suitable for professional technicians and advanced DIYers. Includes detailed specifications, diagrams, torque values, and diagnostic flowcharts.

📊 Manual Specifications

File Format:

Proprietary Web Application (accessible via browser)

Print Quality:

N/A (Digital)

Binding Type:

N/A (Digital)

Paper Type:

N/A (Digital)

Compatibility:

PC, Laptop, Smartphone, Tablet (with internet connection and web browser)

License Type:

Officially Licensed, Factory-Derived Information

Internet Requirement:

Required for access and use.

⚙️ Engine Specifications

Engine Type:

2.0L DOHC 16-Valve Inline-4 (SR20DE)

Engine Displacement:

1998 cc (121.9 cu. in.)

Horsepower:

145 hp @ 6,000 rpm

Torque:

135 lb-ft @ 4,800 rpm

Fuel Delivery:

Multi-port Fuel Injection (MPFI)

Valve Train:

Dual Overhead Camshafts (DOHC), 4 valves per cylinder

Bore X Stroke:

86.0 mm x 86.0 mm

Compression Ratio:

9.5:1

Recommended Fuel:

87 Octane Unleaded Gasoline

🔧 Transmission

Transmission Type:

5-Speed Manual Transmission (MT)

Transmission Type:

4-Speed Electronically Controlled Automatic Transmission (AT)

Manual Transmission Features:

Close-ratio gearing, hydraulic clutch actuation.

Automatic Transmission Features:

Lock-up torque converter, electronically controlled shift points.

📐 Dimensions

Length:

176.8 inches (4491 mm)

Width:

69.1 inches (1755 mm)

Height:

55.7 inches (1415 mm)

Wheelbase:

104.3 inches (2649 mm)

Front Track:

59.3 inches (1506 mm)

Rear Track:

58.7 inches (1491 mm)

Curb Weight:

2,939 lbs (1333 kg) (MT) / 3,025 lbs (1372 kg) (AT)

Gross Vehicle Weight Rating:

Approx. 3,836 lbs (1739 kg)

Trunk Volume:

11.7 cu. ft. (331 liters)

🛡️ Safety Features

NHTSA Front Impact Driver:

Not Explicitly Rated for this Specific Year/Model by NHTSA, but generally good for its class. Likely 4-star equivalent based on similar vehicles.

NHTSA Front Impact Passenger:

Not Explicitly Rated for this Specific Year/Model by NHTSA, but generally good for its class. Likely 4-star equivalent based on similar vehicles.

IIHS Side Impact:

Not explicitly rated by IIHS for this year, but the platform was generally robust.

ABS:

Standard (4-wheel disc brakes with ABS)

Traction Control:

Available on some trims or as an option.

Airbags Front:

Driver and front passenger airbags

Airbags Side:

Optional front side-impact airbags on some trims.

Seatbelts:

3-point front and rear seatbelts with pretensioners and load limiters.

💡 Technology Features

Audio System:

Premium Bose® audio system with CD player and cassette tape deck, often with steering wheel audio controls on higher trims.

Navigation:

Optional GPS navigation system available on higher trim levels.

Cruise Control:

Standard cruise control.

Remote Keyless Entry:

Standard remote keyless entry and security system.

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6 months, whichever comes first (depending on driving conditions and oil type).

Air Filter Replacement:

Every 15,000 - 30,000 miles (24,000 - 48,000 km) or as needed based on inspection.

Spark Plug Replacement:

Every 60,000 - 100,000 miles (96,000 - 160,000 km) for platinum or iridium plugs. Refer to manual for specific type.

Transmission Fluid Change:

Every 30,000 - 60,000 miles (48,000 - 96,000 km) for automatic transmission, or as per manual. Manual transmission fluid typically lasts longer but check for contamination.

Engine Oil Type:

SAE 5W-30 Synthetic or Conventional Motor Oil (API Service SG, SH, or SJ)

Engine Oil Capacity:

4.2 US quarts (4.0 liters) with filter change.

Coolant Type:

Nissan Genuine Super Long Life Coolant (Blue) or equivalent with 50/50 mix of ethylene glycol and distilled water.

Transmission Fluid Type At:

Nissan Matic D or equivalent ATF.

Transmission Fluid Type Mt:

API GL-4 SAE 75W-90 Gear Oil.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Common Issues:

Potential for oil leaks from valve cover gasket or oil pan gasket. Premature wear on rear trailing arm bushings. Catalytic converter issues can occur over time. Clutch wear on manual transmissions. Suspension component wear (e.g., ball joints, tie rod ends) can lead to steering looseness or noise.

📚 Vehicle History

Infiniti Brand Launch:

Infiniti was launched by Nissan in 1989 as a luxury division in North America.

G20 First Generation:

The G20 nameplate was introduced in North America for the 1991 model year, based on the Nissan Primera platform (JDM designation).

G20 Second Generation P11:

The second generation (P11) debuted for the 1999 model year, featuring a significant redesign with a more sophisticated and rounded exterior and interior, and an updated SR20DE engine.

G20 Production Location:

Kyushu, Japan

G20 Production Years:

1991-1996 (1st Gen), 1999-2002 (2nd Gen)

🏆 Awards & Recognition

Consumer Reports Ratings:

Historically, the G20 received moderate to good ratings for reliability and performance, though specific year ratings vary. Often praised for its handling and value.