2018-2019 Volvo S90 () 2.0 T8 Twin Engine (303 Hp) Plug-in Hybrid AWD Geartronic

The Volvo S90 2.0 T8 Twin Engine, produced from 2018 to 2019, represents a significant step in Volvo’s commitment to electrification and luxury. This variant, part of the second generation S90 (introduced in 2016 and built on the Scalable Product Architecture – SPA platform), combined a 2.0-liter turbocharged and supercharged four-cylinder gasoline engine with an electric motor, creating a plug-in hybrid (PHEV) powertrain. Positioned as a premium offering within the S90 lineup, the T8 Twin Engine aimed to deliver both high performance and impressive fuel efficiency, appealing to buyers seeking a sophisticated and environmentally conscious luxury sedan.

Powertrain & Engine Architecture

At the heart of the S90 T8 Twin Engine lies the Volvo Drive-E engine family. Specifically, it utilizes the B4204T34 engine code, a 2.0-liter inline-four cylinder gasoline engine. This engine is notable for its combination of a turbocharger and a supercharger, a configuration designed to eliminate turbo lag and provide a broad, flat torque curve. The supercharger engages at lower engine speeds, providing instant boost, while the turbocharger takes over at higher RPMs for sustained power. Direct fuel injection further enhances efficiency and performance. The engine produces 303 horsepower at 6000 rpm and 400 Nm (295.02 lb-ft) of torque between 2200 and 4800 rpm.

Complementing the gasoline engine is an 87 hp electric motor, powered by a 10.4 kWh lithium-ion battery pack. This battery is strategically located in the central tunnel of the vehicle, minimizing impact on passenger space and contributing to a lower center of gravity. The electric motor delivers 240 Nm (177.01 lb-ft) of torque, available from 0 to 3000 rpm. The powertrain is coupled with an 8-speed automatic transmission (Geartronic), which manages power delivery to all four wheels via Volvo’s all-wheel-drive system. The drivetrain architecture is unique in that the internal combustion engine permanently drives the front wheels, while the electric motor powers the rear wheels, allowing for operation in full electric mode, internal combustion engine only, or a combined mode.

Fuel Injection and Valvetrain

The B4204T34 engine employs direct injection, spraying fuel directly into the combustion chamber for precise control and improved efficiency. The engine also features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing airflow and contributing to the engine’s power output. The engine also incorporates start/stop technology and a particulate filter to reduce emissions, meeting Euro 6d-TEMP standards.

Driving Characteristics

The S90 T8 Twin Engine offers a distinctly different driving experience compared to lower-powered S90 variants, such as those equipped with the 1.5L or 2.0L non-hybrid engines. The combined output of 303 hp and the instant torque from the electric motor results in brisk acceleration. Volvo quoted a 0-100 km/h (0-62 mph) time of 5.1 seconds, and independent tests have shown a 0-60 mph time of around 4.8 seconds. This performance places it firmly in the realm of sporty luxury sedans.

In electric-only mode, the S90 T8 can travel between 40-47 km (24.85-29.2 miles) on the WLTP cycle, or 45 km (27.96 miles) on the NEDC cycle, making it suitable for short commutes and city driving. The automatic transmission is tuned for smooth and efficient shifts, and the all-wheel-drive system provides excellent traction in various weather conditions. The gear ratios are optimized to balance acceleration and fuel economy, with the electric motor providing immediate torque at lower speeds and the gasoline engine delivering power at higher speeds. The combined effect is a refined and responsive driving experience.

Equipment & Trim Levels

The S90 T8 Twin Engine was typically offered in higher trim levels, reflecting its premium positioning. Standard features generally included leather upholstery, a panoramic sunroof, a premium sound system (often Bowers & Wilkins), and a comprehensive suite of safety features, including Volvo’s City Safety system with pedestrian and cyclist detection, lane keeping assist, and adaptive cruise control. The interior featured a minimalist Scandinavian design, with a large touchscreen infotainment system controlling most vehicle functions.

Optional extras included features such as massaging front seats, a head-up display, and advanced parking assistance systems. The dashboard configuration was consistent across T8 models, emphasizing clean lines and a focus on user-friendly technology. Interior color options typically included various shades of leather and wood trim, allowing buyers to personalize their vehicle.

Chassis & Braking

The S90 T8 Twin Engine utilizes a double wishbone front suspension and a transverse stabilizer bar, providing a comfortable yet controlled ride. The rear suspension features a transverse stabilizer and leaf springs. Due to the added weight of the battery pack, the suspension was tuned to provide adequate support and handling. The braking system consists of ventilated discs on all four wheels, with front discs measuring 345×30 mm and rear discs measuring 320×20 mm. The vehicle is equipped with ABS (Anti-lock Braking System) and electronic stability control as standard safety features.

Market Reception & Comparison

The S90 T8 Twin Engine was generally well-received by automotive critics, who praised its performance, fuel efficiency, and luxurious interior. It was often compared to other plug-in hybrid luxury sedans, such as the BMW 740e and the Mercedes-Benz S560e. The Volvo offered a compelling combination of Scandinavian design, advanced safety features, and a refined driving experience. Fuel economy was a significant selling point, with combined fuel consumption ranging from 2.4-2.9 l/100 km (98-81.1 US mpg) on the WLTP cycle.

Compared to non-hybrid S90 variants, the T8 Twin Engine commanded a higher price but offered significantly improved performance and fuel efficiency. While the non-hybrid models were more affordable, they lacked the instant torque and electric-only driving capability of the T8. Reliability reports have generally been positive, with owners reporting few major issues with the powertrain. However, as with any complex hybrid system, potential long-term maintenance costs related to the battery pack and electric motor should be considered.

Technical Specifications

Legacy

The Volvo S90 T8 Twin Engine played a crucial role in establishing Volvo as a leader in the plug-in hybrid market. The powertrain proved to be relatively reliable, with the gasoline engine benefiting from Volvo’s long-standing reputation for durability. The battery pack, while requiring eventual replacement, generally held up well over time. On the used car market, the S90 T8 Twin Engine remains a desirable option for buyers seeking a luxurious and fuel-efficient sedan. However, potential buyers should be aware of the potential costs associated with maintaining a plug-in hybrid system, including battery health and the availability of qualified technicians. The T8’s success paved the way for Volvo’s broader electrification strategy, culminating in the company’s commitment to becoming a fully electric vehicle manufacturer.