The Citroen C6 II 350 THP Tiptronic, produced from 2016 onwards, represents a significant iteration of Citroen’s flagship sedan. Positioned as a mid-range offering within the C6 II lineup, this variant combined a 1.6-liter turbocharged gasoline engine with a six-speed automatic transmission featuring a Tiptronic manual shift mode. The C6 II aimed to recapture the spirit of the original C6, offering a blend of luxury, advanced technology, and distinctive styling, primarily targeting the European market as a competitor to vehicles like the Audi A6 and BMW 5 Series. This specific engine and transmission pairing offered a balance between performance and fuel efficiency, appealing to buyers seeking a comfortable and refined driving experience.
Technical Specifications
| Brand | Citroen |
| Model | C6 |
| Generation | C6 II |
| Type (Engine) | 350 THP (167 Hp) Tiptronic |
| Start of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – extra urban | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel consumption (economy) – combined | 6.4 l/100 km (36.8 US mpg, 44.1 UK mpg, 15.6 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.7 sec |
| Acceleration 0 – 62 mph | 9.7 sec |
| Acceleration 0 – 60 mph | 9.2 sec |
| Maximum speed | 215 km/h (133.59 mph) |
| Weight-to-power ratio | 9.5 kg/Hp, 105 Hp/tonne |
| Weight-to-torque ratio | 6.5 kg/Nm, 154.1 Nm/tonne |
| Power | 167 Hp @ 6000 rpm |
| Power per litre | 104.5 Hp/l |
| Torque | 245 Nm @ 1400-4000 rpm (180.7 lb.-ft. @ 1400-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 1598 cm3 (97.52 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Kerb Weight | 1590 kg (3505.35 lbs.) |
| Trunk (boot) space – minimum | 429 l (15.15 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4980 mm (196.06 in.) |
| Width | 1858 mm (73.15 in.) |
| Height | 1475 mm (58.07 in.) |
| Wheelbase | 2900 mm (114.17 in.) |
| Front track | 1599 mm (62.95 in.) |
| Rear (Back) track | 1573 mm (61.93 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission Tiptronic |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The heart of the C6 II 350 THP is the EP6CDT engine, a 1.6-liter inline-four cylinder gasoline engine. This engine belongs to the Prince engine family, a collaborative development between PSA Peugeot Citroën and BMW. It features direct fuel injection, a twin-scroll turbocharger, and an intercooler to enhance performance and efficiency. The engine utilizes a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The Tiptronic automatic transmission is a six-speed torque converter automatic, offering both fully automatic operation and the ability for the driver to manually select gears. This transmission was chosen for its smooth shifting characteristics and contribution to overall driving comfort. The engine’s electronic engine management system carefully controls fuel injection, ignition timing, and turbocharger boost to optimize power delivery and fuel economy.
Driving Characteristics
The 167 hp output and 245 Nm (180.7 lb-ft) of torque provided by the 350 THP engine delivered adequate performance for everyday driving. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 9.7 seconds, and top speed was rated at 215 km/h (133.59 mph). Compared to the more powerful engine options available in the C6 II range, such as the 181 hp BlueHDi diesel, the 350 THP felt less urgent in its acceleration. However, the turbocharger provided a noticeable boost in power at lower engine speeds, making it responsive in typical driving situations. The Tiptronic transmission offered smooth gear changes, but some drivers found it to be less engaging than a traditional manual gearbox. The gear ratios were tuned for a balance between fuel efficiency and performance, prioritizing comfortable cruising over outright speed.
Equipment & Trim Levels
The C6 II 350 THP Tiptronic typically came equipped with a generous level of standard features. These included automatic climate control, a touchscreen infotainment system with navigation, Bluetooth connectivity, and a suite of safety features such as ABS, ESP (Electronic Stability Program), and multiple airbags. Interior upholstery was typically cloth or leatherette, with higher trim levels offering full leather options. Optional extras included a panoramic sunroof, premium audio system, adaptive cruise control, and parking assistance systems. The trim level influenced the exterior styling details, such as the alloy wheel design and chrome accents.
Chassis & Braking
The C6 II featured a comfortable and refined ride quality, thanks to its independent suspension setup. The front suspension utilized a McPherson strut design, while the rear employed a multi-link system. This configuration provided good handling characteristics and minimized body roll. The braking system consisted of ventilated discs at the front and solid discs at the rear, providing adequate stopping power for the vehicle’s weight and performance. ABS (Anti-lock Braking System) was standard, enhancing safety during emergency braking situations. The steering system was an electric power-assisted rack and pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The Citroen C6 II 350 THP Tiptronic received mixed reviews from automotive critics. While praised for its comfortable ride, spacious interior, and distinctive styling, some reviewers found the 1.6-liter engine to be underpowered for a vehicle of its size and weight. Fuel economy was generally considered to be good, with combined figures around 6.4 l/100 km (36.8 US mpg). Compared to the diesel variants, the 350 THP offered a more refined engine note but lacked the low-end torque and superior fuel economy of the diesel. Against its German rivals, the C6 II 350 THP offered a more affordable price point but often lacked the brand prestige and perceived build quality of its competitors.
Legacy
The EP6CDT engine, while generally reliable, has been known to exhibit issues with carbon buildup on the intake valves, particularly in vehicles that primarily undertake short journeys. Regular servicing and the use of high-quality fuel can help mitigate this issue. The Tiptronic transmission is generally robust, but like any automatic transmission, it requires regular fluid changes to ensure smooth operation. In the used car market, the C6 II 350 THP Tiptronic represents a relatively affordable entry point into the C6 II range. Its blend of comfort, technology, and reasonable running costs makes it an attractive option for buyers seeking a distinctive and spacious executive sedan.
