2008-2010 Infiniti M III (Y50) 35 i V6 24V AWD (307 Hp)

The Infiniti M III (Y50) 35i V6 24V AWD, produced from 2008 to 2010, represented a significant step forward for Infiniti’s mid-size luxury sedan. Positioned as a performance-oriented variant within the Y50 generation, which spanned from 2005 to 2010, the 35i offered a compelling blend of power, all-wheel drive capability, and luxury features. It served as a direct competitor to established European and domestic luxury sedans like the BMW 5 Series, Mercedes-Benz E-Class, and Cadillac CTS. This particular configuration, combining the 3.5-liter V6 engine with a five-speed automatic transmission and all-wheel drive, aimed to deliver a refined yet engaging driving experience.

Technical Specifications

Powertrain & Engine Architecture

The heart of the 2008-2010 Infiniti M35i AWD was the VQ35HR 3.5-liter V6 engine. This engine, a member of Nissan’s highly regarded VQ family, was known for its smooth power delivery and reliability. The “HR” designation signified “High Revolution,” indicating improvements to the engine’s valvetrain and intake system for increased high-rpm performance. It featured a dual overhead camshaft (DOHC) design with four valves per cylinder, and utilized a multi-port fuel injection system. The engine produced 307 horsepower at 6800 rpm and 341 lb-ft of torque at 4800 rpm. This power was then channeled through a five-speed automatic transmission, which was specifically tuned for smooth shifts and responsive acceleration. The all-wheel drive system employed an ATTESA E-TS (Advanced Total Traction Engineering System for All-wheel Steer and Traction) system, which proactively distributed torque between the front and rear axles based on road conditions and driver input, enhancing stability and grip.

Driving Characteristics

The 35i AWD variant offered a comfortable and capable driving experience. While not as overtly sporty as some of its rear-wheel-drive competitors, the all-wheel-drive system provided confident handling in various weather conditions. The five-speed automatic transmission, while not as modern as some of the six- or eight-speed automatics found in later models, offered smooth and predictable shifts. Acceleration from 0-60 mph was achieved in approximately 6.4 seconds, making it a reasonably quick performer for its class. Compared to the base M35 (rear-wheel drive), the AWD model offered enhanced traction, but at the expense of a slight weight increase and a minor reduction in fuel economy. The gear ratios were optimized for a balance between acceleration and highway cruising, providing adequate power for overtaking maneuvers.

Equipment & Trim Levels

The Infiniti M35i AWD typically came well-equipped with standard features such as leather upholstery, power-adjustable front seats, a premium Bose sound system, and a navigation system. Available options included a power-adjustable steering wheel, heated and cooled front seats, a rear-seat entertainment system, and advanced safety features like lane departure warning and intelligent cruise control. The interior design emphasized luxury and comfort, with a focus on high-quality materials and a user-friendly interface. Trim levels were relatively straightforward, with most buyers opting for the well-equipped base model and adding individual options as desired.

Chassis & Braking

The Y50 M35i AWD featured an independent suspension system at all four corners. The front suspension utilized a McPherson strut design with coil springs and an anti-roll bar, while the rear suspension employed a multi-link setup, also with coil springs and a stabilizer bar. This configuration provided a comfortable ride quality while maintaining good handling characteristics. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) was standard, enhancing safety and control during emergency braking situations.

Market Reception & Comparison

The Infiniti M35i AWD was generally well-received by automotive critics. It was praised for its powerful engine, comfortable ride, and luxurious interior. However, some reviewers noted that the five-speed automatic transmission felt dated compared to the newer transmissions offered by competitors. Fuel economy, at 17.3 mpg combined, was considered average for its class. Compared to the rear-wheel-drive M35, the AWD model offered superior all-weather capability but came at a price premium. Against European rivals, the M35i AWD offered a compelling value proposition, providing a similar level of luxury and performance at a lower price point.

Legacy

The VQ35HR engine, in particular, has proven to be remarkably durable and reliable over the long term. With proper maintenance, these engines can easily exceed 200,000 miles. The five-speed automatic transmission, while not as sophisticated as newer units, is also generally reliable. Today, the 2008-2010 Infiniti M35i AWD represents a relatively affordable entry point into the luxury sedan market. Used examples are readily available, and their reputation for reliability makes them an attractive option for buyers seeking a comfortable, well-equipped, and capable vehicle. However, potential buyers should be aware of the potential for age-related maintenance issues, such as worn suspension components and aging rubber seals.