2016-2017 Volvo S90 () 2.0 T8 Twin Engine (320 Hp) Plug-in Hybrid AWD Geartronic

The Volvo S90 2.0 T8 Twin Engine, produced from 2016 to 2017, represents a significant step in Volvo’s commitment to plug-in hybrid technology and luxury sedan design. This variant, part of the second generation S90 (introduced in 2016 and based on Volvo’s Scalable Product Architecture – SPA platform), combined a gasoline-powered four-cylinder engine with an electric motor to deliver both performance and fuel efficiency. Positioned as a premium offering within the S90 lineup, the T8 Twin Engine aimed to attract buyers seeking a sophisticated and environmentally conscious driving experience. It served as the flagship powertrain option, sitting above the T5 and T6 gasoline-only models in terms of both price and technological complexity.

Powertrain & Engine Architecture

At the heart of the S90 T8 Twin Engine lies the Volvo Drive-E 2.0-liter turbocharged and supercharged inline-four cylinder gasoline engine, designated the B4204T35. This engine produces 320 horsepower at 5700 rpm and 295.02 lb-ft of torque between 2200-5400 rpm. The addition of both a turbocharger and a supercharger was designed to eliminate turbo lag and provide a broad, flat torque curve. The engine utilizes direct fuel injection and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. It features a compression ratio of 10.3:1.

Complementing the gasoline engine is an 87 hp electric motor, powered by a 9.2 kWh lithium-ion battery pack. This battery is strategically located in the central tunnel of the vehicle, minimizing impact on passenger space. The electric motor delivers 177.01 lb-ft of torque available from 0-3000 rpm and drives the rear wheels, effectively creating an all-wheel-drive system. The combined system output is 320 hp. The T8 utilizes Volvo’s Geartronic 8-speed automatic transmission. This transmission is specifically tuned to work seamlessly with both the gasoline engine and the electric motor, offering smooth and efficient gear changes. The transmission manages power delivery to all four wheels, optimizing traction and performance in various driving conditions.

Fuel Injection and Valvetrain Details

The direct injection system in the B4204T35 engine precisely meters fuel directly into the combustion chamber, improving efficiency and reducing emissions. The DOHC valvetrain, with its four valves per cylinder, enhances airflow and contributes to the engine’s overall performance. The engine also incorporates a Start & Stop system to further improve fuel economy by automatically shutting off the engine when the vehicle is stationary.

Driving Characteristics

The S90 T8 Twin Engine offers a unique driving experience, blending the responsiveness of a gasoline engine with the instant torque of an electric motor. In hybrid mode, the car automatically manages the interplay between the two power sources, prioritizing electric power at lower speeds and supplementing it with the gasoline engine during acceleration or when higher speeds are required. The all-wheel-drive system provides excellent traction, particularly in inclement weather. The 0-60 mph acceleration time is approximately 4.9 seconds, and 0-100 km/h takes 5.2 seconds, making it a relatively quick sedan. The Geartronic transmission provides smooth shifts, and the steering is precise and well-weighted. Compared to the T5 and T6 models, the T8 offers significantly quicker acceleration and a more refined driving experience. However, the added weight of the battery pack does slightly impact handling agility compared to the lighter gasoline-only variants.

Equipment & Trim Levels

The S90 T8 Twin Engine was typically offered with a high level of standard equipment, reflecting its premium positioning. Standard features generally included leather upholstery, a panoramic sunroof, a premium audio system (often Bowers & Wilkins), a 12.3-inch digital instrument cluster, and a 9-inch touchscreen infotainment system with Apple CarPlay and Android Auto compatibility. Safety features were also comprehensive, including Volvo’s City Safety system (automatic emergency braking), lane keeping assist, and adaptive cruise control. Optional extras included ventilated and massaging front seats, a head-up display, and advanced parking assist features. Interior trim options typically included wood or metal inlays, allowing buyers to personalize the cabin to their preferences.

Chassis & Braking

The S90 T8 Twin Engine utilizes a double wishbone front suspension and a transverse stabilizer bar to provide a comfortable and controlled ride. The rear suspension features a transverse stabilizer and leaf springs. The braking system consists of ventilated discs on all four wheels, with 345×30 mm discs at the front and 320×20 mm discs at the rear. The car is equipped with ABS (Anti-lock Braking System) and electronic brake-force distribution. The steering system is an electric power steering rack and pinion, providing precise and responsive steering feel. Standard tire sizes were 245/45 R18 or 255/40 R19, depending on the trim level and optional wheel packages.

Market Reception & Comparison

The S90 T8 Twin Engine was generally well-received by automotive critics, who praised its performance, fuel efficiency, and luxurious interior. The plug-in hybrid powertrain was seen as a significant step forward in terms of environmental responsibility, and the car’s ability to operate in all-electric mode for up to 27.96 miles (45 km) was a major selling point. Compared to the T5 and T6 models, the T8 offered superior acceleration and a more refined driving experience, but it also came with a higher price tag. Fuel economy was exceptional for a vehicle of its size and performance, achieving approximately 123.8 US mpg (1.9 l/100 km) in combined driving. Reliability reports have been generally positive, although the complexity of the plug-in hybrid system does introduce potential for more maintenance issues compared to simpler gasoline-only models.

Technical Specifications

Legacy

The Volvo S90 T8 Twin Engine played a crucial role in establishing Volvo as a leader in plug-in hybrid technology. While production of this specific model year ended in 2017, the T8 powertrain continued to be offered in subsequent S90 generations. On the used car market, these early T8 models remain desirable for their combination of luxury, performance, and fuel efficiency. The longevity of the battery pack is a key consideration for potential buyers, and regular maintenance of the hybrid system is essential to ensure continued reliability. The B4204T35 engine itself has proven to be relatively robust, but as with any complex powertrain, preventative maintenance is crucial. The S90 T8 Twin Engine represents a significant milestone in Volvo’s transition towards a more sustainable future, and it continues to be a sought-after vehicle for those seeking a premium and environmentally conscious driving experience.