The Hyundai i40 Sedan (facelift, 2015) 1.7 CRDI, producing 115 horsepower, represents a key variant within the second generation of Hyundai’s D-segment offering. Introduced in 2015 as part of a mid-cycle refresh, this model aimed to provide a fuel-efficient and practical option for buyers in the European and Asian markets, where sedans remained popular. Positioned as an entry-level to mid-range trim, it offered a balance between affordability and features, competing with established rivals like the Ford Mondeo, Volkswagen Passat, and Toyota Avensis. Production continued through 2018, with the i40 eventually being phased out as Hyundai shifted its focus towards crossover and SUV models.
Technical Specifications
| Brand | Hyundai |
| Model | i40 |
| Generation | i40 Sedan (facelift 2015) |
| Type (Engine) | 1.7 CRDI (115 Hp) |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.4-5.7 l/100 km (43.6 – 41.3 US mpg) |
| Fuel consumption (extra urban) | 4.1-4.3 l/100 km (57.4 – 54.7 US mpg) |
| Fuel consumption (combined) | 4.6-4.8 l/100 km (51.1 – 49 US mpg) |
| CO2 emissions | 119-127 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 12.4 sec |
| Acceleration 0 – 62 mph | 12.4 sec |
| Acceleration 0 – 60 mph | 11.8 sec |
| Maximum speed | 192 km/h (119.3 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 13 kg/Hp, 76.8 Hp/tonne |
| Weight-to-torque ratio | 5.3 kg/Nm, 187 Nm/tonne |
| Power | 115 Hp @ 4000 rpm |
| Power per litre | 68.2 Hp/l |
| Torque | 280 Nm @ 1250-2500 rpm (206.52 lb.-ft. @ 1250-2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | U II / D4FD |
| Engine displacement | 1685 cm3 (102.83 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 77.2 mm (3.04 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 15.7:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | D-CVVT |
| Engine oil capacity | 5.3 l (5.6 US qt | 4.66 UK qt) |
| Coolant | 6.9 l (7.29 US qt | 6.07 UK qt) |
| Kerb Weight | 1497 kg (3300.32 lbs.) |
| Max. weight | 2090 kg (4607.66 lbs.) |
| Max load | 593 kg (1307.34 lbs.) |
| Trunk (boot) space – minimum | 506 l (17.87 cu. ft.) |
| Trunk (boot) space – maximum | 1672 l (59.05 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Length | 4775 mm (187.99 in.) |
| Width | 1815 mm (71.46 in.) |
| Height | 1470 mm (57.87 in.) |
| Wheelbase | 2770 mm (109.06 in.) |
| Front track | 1591 mm (62.64 in.) |
| Rear (Back) track | 1597 mm (62.87 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Minimum turning circle | 10.94 m (35.89 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/60 R16; 215/50 R17; 225/45 R18 |
| Wheel rims size | 7.0J x 16; 7.5J x 17; 8.0J x 18 |
Powertrain & Engine Architecture
The heart of the i40 1.7 CRDI is the Hyundai-Kia U II engine, specifically the D4FD variant. This 1.7-liter inline-four diesel engine utilizes a common-rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. A turbocharger with an intercooler is employed to boost power and torque, mitigating turbo lag and improving efficiency. The engine features Hyundai’s D-CVVT (Dual Continuous Variable Valve Timing) technology, which adjusts the timing of both intake and exhaust valves to enhance performance and reduce emissions across the engine’s operating range. The 1.7 CRDI produces 115 horsepower at 4,000 rpm and a respectable 280 Nm (206.52 lb-ft) of torque between 1250 and 2500 rpm. This engine was known for its relatively quiet operation compared to some competitors. The 6-speed manual transmission was standard, providing a good balance between fuel economy and driver engagement.
Driving Characteristics
The 1.7 CRDI-equipped i40 offered a comfortable and refined driving experience, prioritizing fuel efficiency over outright performance. Acceleration from 0 to 60 mph took around 11.8 seconds, making it adequate for everyday driving but not particularly sporty. The engine’s strong low-end torque made it easy to navigate city streets and provided sufficient power for highway overtaking. The manual transmission’s gear ratios were well-matched to the engine’s characteristics, allowing for smooth and efficient cruising. Compared to the more powerful 1.6 GDI gasoline engine or the higher-output diesel variants, the 1.7 CRDI felt less responsive, but it compensated with significantly better fuel economy. The suspension was tuned for comfort, absorbing bumps and imperfections in the road effectively.
Equipment & Trim Levels
The 1.7 CRDI typically came equipped with a reasonable level of standard features. Base models included air conditioning, power windows, central locking, and a basic audio system. Higher trim levels added features such as alloy wheels, a touchscreen infotainment system with Bluetooth connectivity, rear parking sensors, and cruise control. Interior upholstery was typically cloth, with options for leather available on higher-spec models. Safety features included ABS, ESC (Electronic Stability Control), and multiple airbags. Optional extras included a panoramic sunroof, heated seats, and a navigation system.
Chassis & Braking
The i40 Sedan utilized a front-wheel-drive layout with an independent McPherson strut suspension at the front and an independent coil spring suspension at the rear. This setup provided a good balance between ride comfort and handling. Braking duties were handled by 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.
Market Reception & Comparison
The Hyundai i40 1.7 CRDI was generally well-received by automotive critics for its fuel efficiency, comfortable ride, and spacious interior. However, some reviewers noted that the engine lacked the refinement and performance of some of its rivals. Compared to the gasoline-powered i40 models, the 1.7 CRDI offered significantly better fuel economy, making it a popular choice for drivers who prioritized running costs. Against competitors like the Ford Mondeo and Volkswagen Passat, the i40 offered a competitive price point and a longer warranty, but it didn’t quite match their overall brand prestige or driving dynamics.
Legacy
The Hyundai i40 1.7 CRDI has proven to be a relatively reliable powertrain in the used car market. The U II engine is known for its durability, and with regular maintenance, it can provide many years of trouble-free service. Common issues are typically related to diesel particulate filter (DPF) clogging, particularly on vehicles that are primarily driven on short journeys. The i40’s spacious interior and comfortable ride continue to make it an appealing option for buyers seeking a practical and affordable mid-size sedan. However, as with any used car, a thorough inspection by a qualified mechanic is recommended before purchase.
