The Evolution of the Infiniti G and M Series
The luxury automotive segment has long been a battleground for innovation, performance, and prestige. Among the key players in this arena is Infiniti, Nissan’s luxury division, which has crafted a series of sedans and coupes that blend luxury with sporty performance. Central to Infiniti’s lineup have been the G and M series, both embodying the brand’s commitment to refinement and driving dynamics. This article provides a detailed overview of the evolution of the Infiniti G and M series, including their production timelines, models, and trim levels.
Infiniti G Series: Origins and Evolution (1990–2016)
Introduction and Early Years (1990–2003)
The Infiniti G series was introduced in 1990 as a successor to the Nissan Leopard and was initially marketed as the G20, based on the Nissan Primera platform. The G series was designed to compete with entry-level luxury sedans such as the BMW 3 Series and Mercedes-Benz C-Class.
- First Generation (V10; 1990–1996)
- Models: G20 (sedan)
- Engines: 2.0-liter inline-4 (SR20DE)
- Trim Levels: Base, G20t (turbo variant introduced later)
- Highlights: The G20 was notable for its sporty handling and solid build quality, establishing Infiniti’s reputation in the North American market.
- Second Generation (V11; 1999–2002)
- Models: G20 (continued), with minor updates
- Engines: 2.0-liter inline-4 (SR20DE)
- Trim Levels: Base, G20t (turbo)
- Notes: The G20 was discontinued in 2002, ending the first phase of the G series.
The G35 Era (2003–2007)
A significant transformation occurred in 2003 when Infiniti launched the G35, marking a shift to a more performance-oriented, rear-wheel-drive platform.
- First Generation G35 (V35; 2003–2006)
- Models: G35 Sedan, G35 Coupe, G35 Sport
- Engines: 3.5-liter V6 (VQ35DE)
- Trim Levels:
- G35 Base
- G35 Journey (more features)
- G35 Sport (sport-tuned suspension, sportier styling)
- Features: Standard features included leather seats, premium audio, and alloy wheels. The G35 Coupe, introduced in 2005, added a sporty two-door option.
- Performance and Variants:
- The G35 was praised for its powerful engine, sharp handling, and upscale interior, positioning it as a strong competitor in the sporty luxury segment.
Second Generation G (2007–2013)
In 2007, Infiniti introduced the second-generation G, which included the G37 nameplate, reflecting an upgrade to a 3.7-liter V6.
- G37 (V36; 2007–2013)
- Models: G37 Sedan, G37 Coupe, G37 Convertible (later years)
- Engines: 3.7-liter V6 (VQ37VHR)
- Trim Levels:
- G37 Base
- G37 Journey (more luxury features)
- G37 Sport (sport suspension, sportier appearance)
- G37 AWD (all-wheel drive options)
- Special Editions:
- G37 Sport 6MT (manual transmission)
- G37 IPL (Infiniti Performance Line, high-performance variant) introduced in 2008, featuring sport-tuned suspension, unique exterior and interior styling, and upgraded brakes.
- Features: The G37 models came with advanced technology including Infiniti’s Drive Mode Selector, premium audio systems, and increased safety features. The coupe and convertible versions offered a more aggressive styling and driving experience.
The End of the G Series (2014–2016)
In 2014, Infiniti rebranded the G series as the Q50, marking the end of the G nomenclature for this line.
Summary of G Series Models and Trim Levels
| Year Range | Models & Variants | Notable Features |
|---|---|---|
| 1990–1996 | G20 (sedan) | Entry-level luxury, SR20DE engine |
| 1999–2002 | G20 (continued) | Minor updates, discontinuation in 2002 |
| 2003–2006 | G35 (sedan, coupe) | VQ35DE V6, sporty handling, multiple trims |
| 2007–2013 | G37 (sedan, coupe, convertible) | 3.7L V6, IPL high-performance variant, multiple trims |
| 2014–2016 | Rebranded as Infiniti Q50 | Transition to new naming conventions |
The Infiniti M Series: From M to Q70 (2003–2019)
The Infiniti M series was introduced as a flagship full-size luxury sedan, emphasizing performance, comfort, and advanced technology. The M series was produced from 2003 until it was replaced by the Infiniti Q70 in 2019.
Early Years and First Generation (Y50; 2003–2010)
- Launch and Models:
The first-generation M debuted in 2003 as a 2004 model, offering a more traditional full-size luxury experience compared to the G series. - Engines and Trims:
- 2003–2004: M45 (4.4-liter V8, 340 hp), M35 (3.5-liter V6)
- Trim Levels: Base, Luxury, Sport, Touring (varied by model year)
- Features: Leather interiors, premium audio, navigation systems, and active safety features.
- Performance: The M45 was notable for its V8 power, while the M35 offered a smoother V6 experience.
Second Generation (Y51; 2011–2019)
In 2011, Infiniti launched the second-generation M, now called the Q70, reflecting Infiniti’s updated naming strategy.
- Q70 (Y51; 2011–2019)
- Models & Engines:
- Q70 3.7: 3.7-liter V6 (330 hp)
- Q70 5.6: 5.6-liter V8 (420 hp) — later discontinued
- Q70 Hybrid: 3.5-liter V6 hybrid powertrain (2012–2014)
- Trim Levels:
- Base
- Luxury
- Sport (introduced in later years)
- Limited (special editions)
- Autograph (luxury-focused trims in some models)
- Features: The Q70 offered advanced driver assistance systems, premium materials, and a refined ride. The Sport trim added sport-tuned suspension, unique styling cues, and upgraded brakes.
- Performance Variants:
- The 5.6-liter V8 was available in earlier years but was phased out to improve efficiency.
- The hybrid model was introduced to appeal to eco-conscious luxury buyers but was discontinued after a few years.
We LOVE cars & cruising around, but sometimes day trips to explore new cities are required (with family or friends) for a spice of variety in your life!
So GO explore!
Cruises & Day/Night City Tours to: Baltimore, Boston, Chicago, Marina Del Ray, New York, Niagara, Philadelphia, San Diego, San Francisco, Toronto, Washington DC, etc.:
.
Model and Trim Evolution of the M/Q70 Series
| Year Range | Models & Variants | Notable Features |
|---|---|---|
| 2003–2010 | M35 (V6), M45 (V8), various trims (Luxury, Sport) | V8 power, luxury amenities, performance options |
| 2011–2019 | Q70 3.7, Q70 5.6 (discontinued later), Hybrid | Modern styling, safety tech, multiple trims |
Transition and Discontinuation
In 2019, Infiniti phased out the M/Q70 in favor of consolidating its sedan lineup under the Q50 and Q70 names, aligning with its global naming strategy. The Q70, as a model, was discontinued, marking the end of an era for Infiniti’s flagship sedans.
Summary of M/Q70 Models and Trim Levels
| Year Range | Models & Variants | Highlights |
|---|---|---|
| 2003–2010 | M35, M45, trims: Luxury, Sport, Touring | V6 and V8 power, luxury features |
| 2011–2019 | Q70 3.7, 5.6, Hybrid, trims: Base, Luxury, Sport | Advanced safety, modern styling, tech features |
Conclusion
The Infiniti G and M series have played pivotal roles in establishing Infiniti’s reputation in the luxury automotive market. From the sporty, compact G20 to the high-performance G35 and G37, the series evolved to meet the demands of discerning drivers seeking a blend of luxury, technology, and driving pleasure. Simultaneously, the M series served as Infiniti’s flagship sedan, emphasizing comfort, power, and advanced features, culminating in the modern Q70.
Over nearly three decades, these models showcased Infiniti’s technological innovation and commitment to customer satisfaction. Their evolution reflects broader industry trends, including increased emphasis on safety, efficiency, and connectivity. While the G and M series are no longer in production, their legacy continues in Infiniti’s current lineup, and they remain highly regarded among enthusiasts and collectors for their performance and style.
