The Infiniti G35 Sedan (V36) 3.5i V6 24V Automatic, produced from 2006 to 2008, represented a significant entry for Nissan’s luxury brand into the highly competitive entry-level luxury sport sedan segment in North America. Positioned as a direct competitor to the BMW 3 Series, Audi A4, and Lexus IS, the G35 aimed to deliver a compelling blend of performance, style, and value. This particular variant, equipped with the 309 horsepower VQ35HR engine and a five-speed automatic transmission, served as a popular choice for buyers seeking a balance between spirited driving and everyday usability. It sat in the middle of the G35 lineup, offering more power than the base models but falling short of the performance-oriented six-speed manual versions.
Technical Specifications
| Brand | Infiniti |
| Model | G |
| Generation | G35 Sedan (V36) |
| Type (Engine) | 3.5 i V6 24V (309 Hp) Automatic |
| Start of production | 2006 |
| End of production | 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 12.4 l/100 km (19 US mpg) |
| Fuel consumption (extra urban) | 9.1 l/100 km (25.8 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.9 sec |
| Acceleration 0 – 62 mph | 5.9 sec |
| Acceleration 0 – 60 mph | 5.6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 5.1 kg/Hp |
| Weight-to-torque ratio | 4.5 kg/Nm |
| Power | 309 Hp @ 6800 rpm |
| Torque | 355 Nm @ 4800 rpm (261.83 lb.-ft. @ 4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | VQ35HR |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 95.5 mm (3.76 in.) |
| Piston Stroke | 81.4 mm (3.2 in.) |
| Compression ratio | 10.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.9 l (5.18 US qt | 4.31 UK qt) |
| Coolant capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1580 kg (3483.3 lbs.) |
| Max. weight | 2045 kg (4508.45 lbs.) |
| Max load | 465 kg (1025.15 lbs.) |
| Trunk (boot) space | 411 l (14.51 cu. ft.) |
| Fuel tank capacity | 76 l (20.08 US gal | 16.72 UK gal) |
| Length | 4730 mm (186.22 in.) |
| Width | 1750 mm (68.9 in.) |
| Height | 1471 mm (57.91 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1514 mm (59.61 in.) |
| Rear track | 1506 mm (59.29 in.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 215/55 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The heart of the G35 3.5i Automatic is the VQ35HR 3.5-liter V6 engine. This engine is a member of Nissan’s highly regarded VQ engine family, known for its smooth operation, reliability, and strong performance. The “HR” designation signifies “High Revolution,” indicating enhancements focused on increased high-rpm power. The engine features a 60-degree V-angle, dual overhead camshafts (DOHC) with variable valve timing (VVT) on both intake and exhaust valves, and a multi-port fuel injection system. The 3.5-liter displacement is achieved with a 95.5mm bore and 81.4mm stroke. The five-speed automatic transmission, designated as the 5AT, was a conventional torque converter automatic. While not as sporty as the available six-speed manual, it provided smooth and relatively quick shifts, making it well-suited for daily driving. The transmission was tuned for comfort and efficiency, with gear ratios optimized for both acceleration and highway cruising.
Driving Characteristics
The G35 3.5i Automatic delivered a comfortable yet engaging driving experience. The 309 horsepower and 261 lb-ft of torque provided ample power for confident acceleration and passing maneuvers. While the automatic transmission didn’t offer the same level of control as the manual, it was responsive and generally shifted smoothly. Compared to the six-speed manual version, the automatic traded some raw performance for increased ease of use. The 0-60 mph time of around 5.6 seconds was respectable for its class. The rear-wheel-drive configuration contributed to a balanced feel, and the suspension provided a good compromise between ride comfort and handling precision. The automatic transmission’s gear ratios were geared towards providing good acceleration from a standstill, but higher gears were optimized for fuel efficiency during highway driving.
Equipment & Trim Levels
The G35 3.5i Automatic typically came standard with a generous array of features, including leather upholstery, power-adjustable front seats, a premium Bose audio system, automatic climate control, and alloy wheels. Optional extras included a navigation system, sunroof, and upgraded interior trim. The G35 offered several packages that bundled popular options together, allowing buyers to customize their vehicle to their preferences. Interior materials were generally of high quality, and the dashboard layout was clean and functional. The standard interior color schemes included charcoal, beige, and black leather options.
Chassis & Braking
The G35 Sedan utilized a robust chassis with a fully independent suspension system. The front suspension featured coil springs and shock absorbers, while the rear suspension also employed coil springs and shock absorbers. The braking system consisted of ventilated disc brakes at all four corners, providing ample stopping power. Anti-lock brakes (ABS) were standard, enhancing safety and control during emergency braking situations. The G35’s suspension tuning was geared towards providing a comfortable ride without sacrificing handling. Stabilizer bars were fitted at both the front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Infiniti G35 Sedan was generally well-received by automotive critics. It was praised for its stylish design, strong performance, and comfortable interior. The 3.5i Automatic variant was considered a good all-around choice, offering a balance between performance and convenience. Compared to its rivals, the G35 offered a compelling value proposition, often undercutting the prices of comparable BMW and Audi models. Fuel economy was average for the class, with EPA estimates of around 19 mpg city and 25 mpg highway. Reliability was generally good, although some owners reported minor issues with the automatic transmission over the long term.
Legacy
The Infiniti G35 Sedan played a crucial role in establishing Infiniti as a credible player in the entry-level luxury segment. The VQ35HR engine proved to be exceptionally durable, and many G35s continue to provide reliable transportation today. The automatic transmission, while not without its occasional issues, generally held up well over time with proper maintenance. On the used car market, the G35 3.5i Automatic remains a popular choice for buyers seeking an affordable and stylish sport sedan. Its combination of performance, features, and reliability has ensured its enduring appeal.
