InfinitiG202001Overview/infiniti/g20/2001/base/

2001 Infiniti G20

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2001 G20.

Transmission Automatic 4-spd

The 2001 Infiniti G20 features a 4-speed automatic transmission and delivers an EPA-rated fuel economy of 20/28/23 mpg. Maintenance for the vehicle requires 3.6 quarts of 5W-30 API SM engine oil. Within the model's 1991-2002 production history, this year is among the most reliable with zero recalls and only seven total owner complaints, tying the 1994 model for the lowest volume in the series. These limited complaints are concentrated primarily in the engine and engine cooling areas.

Model year200220012000199919961995199419931992

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity3.6 qtOEM · verified
Engine oil type5W-30 API SMOEM · verified
Lug nut torque87-108 ft-lbsOEM · verified
EPA fuel economy20/28/23 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 24F · 585 CCA battery, OE oil filter 1520865F0E. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 24F · 585 CCAOEM · verified
Tail / brake / turnTURNOEM · verified
Tire sizeP195-65HR15OEM · verified
Wheel / rim6-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter1520865F0E
Engine air filter16546V0100
Fuel filter1640041B1A
Spark plug224011P116 alt 2240120J07
Front wiper blades288901E301 alt 288907J111
Serpentine belt1195053J20 alt A195053J12
Thermostat2120060J00
Cabin air filter27277VP03A

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length177.6 in
Overall width66.5 in
Overall height55.1 in
Wheelbase102.4 in
Curb weight2937 lb
Track (front / rear)57.9 / 57.5 in
Weight distribution (front / rear)62/38

Ratings & economy EPA / vPIC

EPA city / highway / combined20 / 28 / 23 mpg
DrivetrainFront-Wheel Drive
Passenger volume91 cu ft
Cargo volume14 cu ft
Recommended fuelRegular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the G20 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

8.5–10.8 sec0–60 mph (tested)quickest 8.50 sec — 1999 t Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
1999t Sedan 2.0L I-48.50 sec16.30 sec140 hpFWD
1999t Sedan 2.0L I-410.70 sec18.00 sec140 hpFWD
1999t Sedan 2.0L I-410.82 sec18.07 sec140 hpFWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 3.6 qt of 5W-30 API SM engine oil, DOT 3 brake fluid. Torque lug nuts to 87-108 ft-lbs, the oil drain plug to 22.0-28.0 ft-lbs. The firing order is 1-3-4-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API
Engine Oil Capacity3.6 qt
Power Steering FluidATF

Engine torques

Engine Flywheel Bolts61-69 ft-lbs
Engine Oil Pan Drain Plug22.0-28.0 ft-lbs

Chassis torques

Lug Nuts87-108 ft-lbs
Front Wheel Hub174-231 ft-lbs
Rear Wheel Hub156 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)800 rpm
Curb Idle Speed Variance (No Load)50 rpm
Ignition Coil Primary Resistance0.5-1.0 ohms
Ignition Coil Secondary Resistance25,000 ohms
Spark Plug Gap0.043 in
Spark Plug Torque18.0 ft-lbs
Ignition Timing15 degrees

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.21-1.45 lbs
Oil GroupPAG
Oil Type100
Oil Capacity6.10 oz
Standard BCI Group Number24F
Standard BCI Cranking Performance585 cca

Service checks

Pressure Test23 psi
Radiator Cap Pressure Relief11-14 psi
Thermostat Opening Temperature180 °F
Regulated Fuel System Pressure (Without Vacuum)43.0 psi
Regulated Fuel System Pressure (With Vacuum)34.0 psi
Engine Oil Pressure11.7 psi @ Idle, 46-57 psi @ 3000 rpm psi
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Torque Caliper to Bracket53-72 ft-lbs / 16-23 ft-lbs
Torque to Knuckle72-87 ft-lbs
Minimum Pad ThicknessFront: 0.079; Rear: 0.079 in
Rotor Max Parallel Variation0.0004 in
Rotor Runout Limit0.0028 in
Rotor Nominal Thickness From0.87 in / 0.35 in
Rotor Nominal Thickness To0.87 in / 0.35 in
Rotor Minimum Machining0.787 in / 0.31 in

Multi-step torque procedures OEM · verified

Camshaft Bearing/Carrier Cap Bolts or Studs — tightening sequence 1 stages
1Intake Side1.5 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
110-12 ft. lbs., Step 2: 60-6510–12 ft. lbs
Cylinder Head — tightening sequence 6 stages
129 ft. lbs.29 ft. lbs
258 ft. lbs.58 ft. lbs
3loosen all bolts completely
429 ft. lbs.29 ft. lbs
590-95 degrees90–95 degrees
690-95
Cylinder Head — tightening sequence 6 stages

Prep Measure the diameter of each cylinder head bolt at point A and point B. Point A = 15.00 mm from thread end and point B = 55.00 mm from thread end. If either diameter is less than 0.23 mm use new bolts coated with clean engine oil. Tighten all bolts to finger tight then continue on with the following procedure.

129.0 ft. lbs.29 ft. lbs
258.0 ft. lbs.58 ft. lbs
3Loosen bolts 360 degrees in reverse order360 degrees
429.0 ft. lbs.29 ft. lbs
590 degrees-95 degrees90 degrees
690 degrees-95 degrees90 degrees
Main Bearings — tightening sequence 1 stages
15-9 ft. lbs., Step 2: 70-80 degrees, Step 3: Back off 360 degrees ft. lbs., Step 4: 30-355–9 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs at 105,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 miBattery (inspect electrolyte level) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 15,000 miAccessory Drive Belt (inspect) · Axle Shaft Oil Seal (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Cruise Control System (inspect)
Every 30,000 miEngine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect) · Steering Linkage (inspect) · Suspension System (inspect)
At 60,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)
At 105,000 miSpark Plugs (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2001 Infiniti G20 sits in the second-generation run (19992002), a period that shows a marked improvement in recalls and complaints compared with the 1991–1996 first generation, which logged one or two recalls per year and higher complaint counts, including a spike of 29 complaints in 1995. For 2001 specifically, NHTSA records only 7 complaints, 0 recalls, 0 investigations, and 63 TSBs—matching the second generation's low complaint floor and zero-recall profile, though its TSB count sits slightly below the 2000 peak of 66 and above the 2002 figure of 56. Complaint volume is comparable to 1999 and 2002 (7 each) and lower than 2000 (10), placing 2001 near the quietest point of the generation's federal record. The top reported complaint areas are Engine & Engine Cooling (2), Fuel/Propulsion System (1), Power Train (1), and Visibility (1), with 1 crash-related complaint and 0 fire complaints; the data does not specify root causes. Given the zero recalls, low complaints, and declining-but-still-moderate TSB count, the 2001 G20 appears to be one of the better years of this generation to buy used.

0
Open recalls
NHTSA campaigns
63
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
7
Owner complaints
1 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 7 complaints on record, top 6 components.

Engine & Engine Cooling2
Fuel/Propulsion System1
Power Train1
Visibility1
Service Brakes, Hydraulic1
Service Brakes, Hydraulic,Air Bags1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 63 bulletins on record with NHTSA.

BulletinDateComponentSummary
ITB13-052E2024-05-20Electrical SystemINTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See…
ITB17-009H2024-04-29Visibility/WiperWINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY…
ITB13-007I2024-04-29Visibility/WiperREMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See…
ITB09-039K2024-04-29Visibility/WiperWINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last…
ITB13-007H2023-02-27StructureREMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific G20. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2001 G20 take?

3.6 qt of 5W-30 API SM, per the factory manual.

Does the 2001 G20 have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the G20 get?

EPA figures are 20 city / 28 highway / 23 combined mpg.