Saturn›Ion›2005›Overview/saturn/ion/2005/base/

2005 Saturn Ion

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2005 Ion.

Body PASSENGER CAR

The 2005 Saturn Ion is a passenger‑car that uses a 5‑qt oil capacity with 5W‑30 API lubrication and was subject to five recall campaigns, with steering issues comprising a major share of the 573 total owner complaints. Across its 2003‑2008 production window the model’s complaint volume peaked at 1,235 reports in 2006 and dropped to only four in 2008, placing the 2005 model in the mid‑range of reliability. Consequently, the 2005 Ion exhibits a moderate complaint profile, notably lower than the high‑complaint years but higher than the low‑complaint endpoint.

Model year2007 2006 2005 2004 2003

Quick specs

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

Engine oil capacity5 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque100 ft-lbsOEM · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 78 · 600 CCA battery, OE oil filter 12580255. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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 78 · 600 CCAOEM · verified

OE service part numbers OEM · verified

Engine oil filter	12580255 alt 12605566
Engine air filter	19239713 alt 22679620
Fuel filter	22734980 discontinued
Spark plug	12681663 alt 12680075
Front wiper blades	20918023 alt 15245111
Serpentine belt	12634322 alt 12634320
Thermostat	03522676 alt 12622410
Cabin air filter	52493319

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	185 in
Overall width	68.1 in
Overall height	55.9 in
Wheelbase	103.1 in
Curb weight	2751 lb
Track (front / rear)	58.7 / 58.3 in
Weight distribution (front / rear)	60/40

Service quick specs OEM factory data

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

This engine holds 5 qt of 5W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 100 ft-lbs, the oil drain plug to 18.0 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

Automatic Transmission Fluid	ATF
Automatic Transmission Fluid Capacity	7
Brake Fluid	DOT 3
Engine Oil	5W-30 · API
Engine Oil Capacity	5 qt
Manual Transmission Fluid	GM part number 88861800
Manual Transmission Fluid Capacity	3.6

Engine torques

Intake Manifold to Engine Bolts	16 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	9 ft-lbs
Intake Manifold to Engine Bolts	7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	13 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Front Wheel Hub	155 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	0.040 in
Spark Plug Torque	20.0 ft-lbs
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	0.040 in
Spark Plug Torque	18.0-22.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	.90 lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	5.00 oz
Standard BCI Group Number	78
Standard BCI Cranking Performance	600 cca
Standard BCI Group Number	75

Service checks

Pressure Test	15 psi
Radiator Cap Pressure Relief	13-17 psi
Thermostat Opening Temperature	185-205 °F
Key ON Engine OFF (KOEO)	57-67
Fuel Pump Pressure Minimum	65.0 psi
Key ON Engine OFF (KOEO)	50-60
Injector Primary Resistance	11-14 @ 50-90 degreesF ohms
Injector Primary Resistance	11-14 na ohms

Brakes

Brake Application	WITH RPO J41, JM4 / WITH RPO JL9
Torque Caliper to Bracket	25 ft-lbs
Torque to Knuckle	85 ft-lbs
Minimum Pad Thickness	0.039 in
Minimum Shoe Thickness	0.020 in
Brake Application	WITH RPO J41, JM4 / WITH RPO JL9
Rotor Max Parallel Variation	0.001 in
Rotor Runout Limit	0.002 in

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

74 ft. lbs., step 2: 75

74 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

74 ft. lbs., step 2: 125

74 ft. lbs

Cylinder Head — tightening sequence 2 stages

1	22 ft. lbs.	22 ft. lbs
2	155 degrees.	155 degrees

Cylinder Head — tightening sequence 2 stages

1	22 ft. lbs.	22 ft. lbs
2	155 degrees.	155 degrees

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 100,000 mi; coolant at 150,000 mi. The big-interval services (at 150,000 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 25,000 mi	Exhaust System (Complete) (inspect) · Fuel System (inspect)
Every 50,000 mi	Accessory Drive Belt (inspect) · Engine Air Filter Element (replace)
Every 100,000 mi	Fuel Filter (replace) · Spark Plugs (replace) · Transmission Assembly (drain & refill)
At 150,000 mi	Engine Coolant System (drain, flush & refill)

Reliability & federal safety record

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

In 2005, the Saturn Ion received 573 complaints, a noticeable drop from the 898 complaints in 2004 and a modest increase from the 766 complaints in 2003, positioning it in the lower third of the five‑year range. Recall activity also fell to 5 in 2005, down from 10 in 2004 and 7 in 2003, suggesting fewer widespread safety defects that year. Investigations were minimal, with only 2 in 2005 versus 4 in 2004 and 5 in 2003, while the number of TSBS reports rose to 585, indicating a higher rate of “no‑fault” complaints. The top complaint categories in 2005—Steering (211), Electrical System (132), and combined Steering/Electrical (26)—highlight recurring issues with the vehicle’s steering and electrical components, but the overall complaint count remains below the peaks of 2006 and 2007. With only 31 crash complaints and 4 fire complaints, the 2005 Ion shows relatively low severity incidents. Given the reduced recall and investigation numbers, 2005 represents a comparatively stable year, making it a reasonable purchase choice provided the steering and electrical systems have been inspected.

Open recalls

NHTSA campaigns

585

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

573

Owner complaints

31 involved a crash · 4 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’03 ’04’05’06 ’07 ’08

Owner complaints filed with NHTSA, by component

All 573 complaints on record, top 8 components.

Steering211

Electrical System132

Steering,Electrical System26

Exterior Lighting16

Fuel/Propulsion System15

Power Train12

Air Bags11

Electrical System,Air Bags11

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 5 campaigns on record for this vehicle.

14V171000Electrical System:IgnitionReported 10/04/2014

General Motors LLC (GM) is recalling certain model year 2005-2010 Chevrolet Cobalt, 2006-2011 Chevrolet HHR, 2007-2010 Pontiac G5, 2006-2010 Pontiac Solstice, 2003-2007 Saturn Ion, and 2007-2010 Saturn Sky vehicles. In… Remedy: General Motors will notify owners, and for vehicles that were built with the defective ignition cylinder and have not previously had the ignition cylinder replaced with the…

14V153000Steering:Electric Power Assist SystemReported 31/03/2014

General Motors LLC (GM) is recalling certain model year 2004-2006 and 2008-2009 Chevrolet Malibu, 2004-2006 Malibu Maxx, 2009-2010 HHR (non-turbo), 2010 Cobalt, 2008-2009 Saturn Aura and 2004-2007 Ion, and 2005-2009… Remedy: GM will notify owners, and dealers will perform one of four bulletins. Parts are not currently available. GM expects to send an interim notification around May 28, 2014. When…

Technical service bulletins NHTSA · verified

Showing 5 of 585 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
PIP5601C	2025-07-18	Unknown Or Other	This PI communicates the requirement to provide a pico file to receive diagnostic…
PIT5074R	2025-05-30	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIT5074R	2025-05-30	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIT5074R	2025-05-30	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIP5358D	2025-02-19	Unknown Or Other	This Preliminary Information communication provides information to the technician about…

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 Ion. 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.

Group 78 battery Vehicles taking 5 qt Engine oil filter 12580255 Engine air filter 19239713 Fuel filter 22734980 Spark plug 12681663

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2005 Ion take?

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

Does the 2005 Ion have open recalls?

NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.