2003-2007 Infiniti G35: Full Review

Updated: 11/23/08

2003 Infiniti G35
2006 Infiniti G35
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2003-2007 Infiniti G35 

  • Price Range:  $11,300 - $22,500
CG Rating

62

out of 100

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Learn about the year-to-year changes and reliability for the 2003-2007 Infiniti G35 and our price chart details a range of prices based on vehicle mileage and condition.

Pros

  • Pass/Merge Acceleration
  • Ride/handling
  • Available All-wheel drive
  • Automatic-transmission performance

Cons

  • Rear-seat entry/exit
  • Fuel economy
  • Ride w/Sport Suspension

Vehicle Highlights

Introduced in spring of 2002, as an early 2003 model, Infiniti's newest near-luxury sedan headed into that autumn with a coupe companion and a second transmission choice. Aimed at enthusiast drivers, these cars shared a basic rear-wheel-drive platform and V6 powerteam. Sedans used a 260-horsepower engine, versus 280 horsepower for the coupe. The sedan was one of the longest near-luxury cars in wheelbase and overall length, and took a sportier tack than Infiniti's front-drive I35. Essentially, the G35 coupe was a stretched version of Nissan's new-for-2003 350Z sports car, with a small fold-down back seat, different styling, and a greater luxury emphasis. It had less power than the Z-car, but more than the G35 sedan. Both G35s offered a five-speed automatic transmission with manual shift gate; or later in the season, a six-speed manual. The manual transmission also became available in sedans, early in calendar 2003. Both body styles had antilock four-wheel disc brakes with full power brake assist, front side airbags, curtain side airbags (covering front seat only in coupes), and an in-dash CD changer. The Luxury sedan came with fabric upholstery and 16-inch wheels, and had no options. The Luxury Leather sedan added leather upholstery, a power driver's seat, and 17-inch wheels. Xenon headlights went from optional to standard at midyear. The Luxury Leather sedan could be upgraded with wood interior trim, a sunroof, and a Premium Package that included reclining rear seatbacks and a firmer Sport-Tuned Suspension with performance tires. All coupes came with xenon lights and with suspension tuning equivalent to that of the sedan's sport-tuned setup. The base coupe rode on 17-inch wheels and contained cloth upholstery. With leather upholstery, coupes got 18-inch wheels, a limited-slip differential, heated front seats, steering-wheel audio controls, and other amenities. Manual-transmission coupes got uprated brakes. Bose digital audio and DVD navigation were available for all G35s, as was satellite radio with a choice of XM or Sirius service. Competitors included the Acura TL, Audi A4, BMW 3-Series, and Cadillac CTS.

Expert Ratings Summary (view detailed report)

Category G35 Leather sedan w/automatic and Sport Suspension Rating
Performance 7
Fuel Economy 4
Ride Quality 5
Steering/Handling/Braking 8
Quietness 6
Controls/Materials 7
Interior Room 8
Room/Comfort (rear) 6
Cargo Capacity 4
Value within Class 7
Total Score: 62
Learn about the year-to-year changes of the 2003-2007 Infiniti G35. Get full details of the styling and performance changes throughout the history of the 2003-2007 Infiniti G35.

Year to Year Changes


2004 Infiniti G: Introduction of an all-wheel-drive sedan highlighted 2004 changes for Infiniti's sporty near-luxury car. The new Leather AWD sedan had a Snow Mode that allowed the driver to lock in a 50/50 front/rear torque split. Rear-drive G35s were available with a five-speed automatic transmission or a six-speed manual. The AWD model came only with automatic. For 2004, the base sedan joined other sedans with standard 17-inch wheels. It had fabric upholstery and newly heated outside mirrors. The Leather sedan added heated front seats. Manual-transmission sedans gained a limited-slip differential. Manual-shift coupes had upgraded brakes and 18-inch wheels, versus 17s. All G35s gained a standard tire-pressure monitor.
2005 Infiniti G: More power and revised styling marked the 2005 models. Automatic-transmission sedans adopted the coupe's 280-horsepower V6. Manual-shift coupes and sedans now held a 298-horsepower engine. The all-wheel-drive G35x came only with automatic. A limited-slip differential and sport suspension were standard on manual-transmission models. Coupes with the manual gearbox rode on 19-inch tires, the G35x sedan had 17-inch tires, and other automatic models had a choice of wheel sizes.
2006 Infiniti G: A keyless-entry/engine-start system and wireless cell phone link are newly available for Infiniti's entry-level cars for 2006.

Our road test for the 2003-2007 Infiniti G35 includes a full evaluation from the inside out. We've evaluated every aspect of the 2003-2007 Infiniti G35 and highlighted the vehicle's performance with pros and cons. Use our comprehensive road test ratings to decide if this generation 2003-2007 Infiniti G35 is right for you.

Consumer Guide® Road-Test Evaluation

With an automatic transmission, "stoplight racers" may crave more takeoff punch. But G35s are satisfyingly quick otherwise. An automatic-transmission Leather coupe accelerated to 60 mph in 6.2 seconds, and a test manual-shift coupe felt even swifter. The eager V6 is a good match for the smooth, rapid-shifting automatic, whose manual-gear-change mode gives an extra measure of driver control. The G35 feels even more alert with the short-throw, precision-feel manual transmission. Fuel economy is so-so. A test Leather sedan with Sport Tuned Suspension, Aero package, and automatic transmission, averaged 17.9 mpg. A manual-shift Leather coupe averaged 17 mpg, while the G35x 4WD sedan ranged from 15.8 to 17.3 mpg. Infiniti recommends premium-grade fuel for all G35s. Taut and stable on the road, the G35 is helped by its long wheelbase and solid structure. Unwanted body motions are well-checked, but large bumps occasionally pound through, especially in sport-tuned-suspension sedans and coupes with larger wheels. All G35s are grippy and agile--a close match for the targeted BMW 3-Series and Mercedes-Benz C-Class. Still, European rivals have the edge in high-speed stability and steering feedback. On bumpy surfaces, coupes with 18-and 19-inch wheels can be tossed slightly off course as low-profile tires fail to absorb shocks. Brakes are strong. The engine has a lusty note in rapid acceleration, and a background baritone at cruise. Road noise is evident on coarse surfaces, pronounced with 17-inch tires, and intrusive with 18s or 19s. Wind noise is moderate, though lower in sedans. Sedans and coupes share a generally well-designed cabin. The main gauge cluster moves to match the steering wheel's tilt, though the wheel obscures power-mirror controls. Climate-system readouts display at the dashboard top, remote from climate buttons. Unorthodox power-seat controls mount beside the console, susceptible to spills from nearby cupholders. Fortunately, the navigation system does not incorporate audio or climate functions, and its screen rises from the dashboard top. Assembly quality and most interior materials are on target for the class, but a few rough-edged plastic trim pieces separate it from Audi, BMW, Lexus, and Mercedes-Benz rivals. Front space is good in sedans, but firm cushions can annoy on long drives. Coupes have a special driver's seat with softer cushioning, better long-distance comfort, though more prominent side bolsters interfere with arm movement when shifting the manual transmission. With a sunroof, coupes are snug for six-footers and seatbelts require an annoying stretch to reach. The steering wheel does not telescope, as in many rivals. Visibility is good in sedans, but very confined aft in coupes. Sedans have above-average rear head and leg room on a firm, well-contoured bench, but limited width and a driveline hump thwart uncrowded three-abreast travel. The sedan's Premium package includes manually-adjusting backrest recline, a feature that not everyone finds useful. Coupes are sized for two small adults out back, with difficult entry/exit. Their front seats power forward and back, but some twisting is needed to get inside. The coupe's body design limits headroom for taller passengers, but leg space is surprisingly good. The sedan's trunk is large for the class. Lid hinges don't intrude, but the opening won't swallow larger objects. A center ski pass-through is included, but no folding seatbacks. Coupe seatbacks fold, but the opening to the trunk is limited. Interior storage space is good.
Value for the Money
Infiniti isn't as prestigious a brand as BMW, Lexus or Mercedes, and doesn't quite match them (or Audi) for refinement, detail finish, and materials. Still, in performance, style and space--and all-wheel drive after 2003--the G35 earns a Recommend rating. It's a credible and less-expensive alternative to rival models from those automakers.

Expert Ratings Summary

Category G35 Leather sedan w/automatic and Sport Suspension Rating
Performance 7
Fuel Economy 4
Ride Quality 5
Steering/Handling/Braking 8
Quietness 6
Controls/Materials 7
Interior Room 8
Room/Comfort (rear) 6
Cargo Capacity 4
Value within Class 7
Total Score: 62

Each vehicle report contains one rating chart for representative model. Consumer Guide® rates in ten key areas: Performance, Fuel Economy, Ride Comfort, Steering and Handling, Interior Noise, Controls and Materials, Driver Room, Passenger Room, Cargo Capacity, and Insurance Costs. These ratings compare the particular vehicle rated to ALL other vehicles, not a vehicle's standing in a particular class. In the ratings table, "1" is the lowest rating and "10" is the highest rating.
Our reliability study for this generation Infiniti G includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Infiniti G .

Trouble Spots

Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer, however, we have our own expert looking at additional vehicle problems.

Accessory belt: The A/C belt may squeal or break because the compressor (and its pulley) goes out of alignment. (2003)

Automatic transmission: The automatic transmission may engage slowly, shift hard or into the wrong gear requiring reprogramming of the transmission control module. (2003)

Brake noise: On vehicles not equipped with Brembo calipers, the brakes are noisy, particularly in reverse, requiring replacement of all shims and revised brake pads. (2003-04)

Cold-starting problems: In very cold conditions, the starter may not run and may require replacement of the Intelligent Power Distribution Module. (2004)

Radiator: The radiator cap gasket may swell over time and when it does, will not allow the cap to vent properly resulting in overheating and lost coolant. (2003-04)

Consumer Guide® Estimated Repair Costs

This table lists costs of likely repairs for comparison with other vehicles. The dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the typical repair without extras or add-ons. Like the pricing information, replacement costs can vary widely depending on region. Expect charges at a new-car dealership to be slightly higher.
Item Name Repair Cost
A/C Compressor $640
Alternator $545
Automatic Transmission or Transaxle $6,020
Brakes $575
Clutch, Pressure Plate, Bearing $790
Constant Velocity Joints $1,850
Exhaust System $805
Radiator $695
Shocks and/or Struts $1,980
Timing Chain or Belt $490
Our price chart for this generation Infiniti G details a range of prices in year-by-year listings based on vehicle mileage and condition.
Prices Good Average Poor
2006
G35 coupe $22,800-24,500 $21,000-22,500 $14,800-15,900
G35 sedan $19,800-21,500 $18,200-19,800 $12,900-14,000
2005
G35 coupe $20,000-21,500 $18,400-19,800 $13,000-14,000
G35 sedan $17,000-18,700 $15,600-17,200 $10,900-12,000
2004
G35 coupe $18,000-19,500 $16,600-17,900 $11,500-12,500
G35 sedan $14,500-16,200 $13,200-14,700 $9,000-10,000
2003
G35 coupe $15,500-16,700 $14,100-15,200 $9,900-10,700
G35 sedan $12,500-13,700 $11,300-12,300 $7,100-7,800
This chart details a range of prices in year-by-year listings for vehicles in three condition levels:
Good: a clean low-mileage, solid-running vehicle that needs little or no repair.
Average: a car with normal miles on the odometer, perhaps a few scrapes or dings; engine might need a minor repair or two, but runs acceptably well.
Poor: might have potentially dangerous problems with the engine and/or body, or abnormally high mileage; definitely in need of mechanical attention. Valuations reflect wholesale prices paid by dealers at auction, and retail prices on used-car lots. Each range covers all trim levels and engine types for a vehicle with a typical amount of equipment--usually an automatic transmission, air conditioning, stereo, etc. Fully loaded vehicles may cost more. Average mileage is 12,000 miles per year. Keep in mind that these are guidelines only. Actual selling prices vary- especially from region to region.
Specs for this generation Infiniti G include everything from fuel mileage to seating capacity to options availability.

Vehicle Dimensions

Specification 2-door coupe 4-door sedan
Wheelbase, in. 112.2 112.2
Overall Length, in. 182.2 186.5
Overall Width, in. 71.5 69.0
Overall Height, in. 54.8 57.7
Curb Weight, lbs. 3416 3336
Cargo Volume, cu. ft. 7.8 14.8
Standard Payload, lbs. -- --
Fuel Capacity, gals. 20.0 20.0
Seating Capacity 4 5
Front Head Room, in. 39.2 40.1
Max. Front Leg Room, in. 43.8 43.9
Rear Head Room, in. 34.7 37.9
Max. Rear Leg Room, in. 31.4 36.2

Specifications Key: NA = not available; "--" = measurement does not exist.


Powertrain Options and Availability

In the 2003-04 G35 sedan, Infiniti's 3.5-liter dual-overhead-cam V6 engine produces 260 horsepower, versus 280 horsepower in the G35 coupe. Both body styles could be equipped with either a six-speed manual gearbox or a five-speed automatic transmission. For 2005, automatic-transmission sedans moved up to the 280-horsepower engine, while manual gearboxes were accompanied by a new 298-hp version.
Engines Size liters /
cu. in
Horse- power Torque Transmission:
EPA city/hgwy
Consumer Guide Observed
dohc V6 3.5 / 214 260 260 6-speed manual: 20/27
5-speed automatic: 19/26
6-speed manual: --
5-speed automatic: 17.9
dohc V6 3.5 / 214 298 260 6-speed manual: 19/26 6-speed manual: --
dohc V6 3.5 / 214 280 260-270 6-speed manual: 20/27
5-speed automatic: 19/26
6-speed manual: 17
5-speed automatic: --

Specifications Key: NA = not available; "--" = measurement does not exist.

Built In:  Japan
Drive Wheels: longitudinal front-engine/rear- or all-wheel drive
Detailed safety information for this generation Infiniti G include detailed crash test scores from the NHTSA.

NHTSA Crash-Test Results

Vehicle crash test information not available at this time.

The National Highway Traffic Safety Administration (NHTSA) tests a vehicle's worthiness in front- and side-impact collisions and rates its resistance to rollovers. Front-impact crash-test numbers indicate the chance of serious injury: 5 = 10% or less; 4 = 10-20%; 3 = 20-35%; 2 = 35-45%; 1 = More than 45%. Sideimpact crash-test numbers indicate: 5 = 5% or less; 4 = 6-10%; 3 = 11-20%; 2 = 21-25%; 1 = More than 26%. Rollover resistance numbers indicate the chance for rollover when the vehicle leaves the roadway: 5 = Less than 10%; 4 = 10-20%; 3 = 20-30%; 2 = 30-40%; 1 = More than 40%.


No Recall History is available at this time.


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