2018 Ford Fiesta
Vehicle Specs & Maintenance Data
The 2018 Ford Fiesta maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Ford Fiesta.
For oil changes, the 2018 Ford Fiesta takes 5W-20 Full Synthetic motor oil with a capacity of 4.3 quarts. Brake fluid type is DOT 3, the recommended coolant is Motorcraft Gold (OAT), and transmission fluid is Mercon LV. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Ford Fiesta, torque the lug nuts to 100 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2018 Ford Fiesta have reported 5 common issues including "PowerShift DCT Transmission Shudder and Failure", "Door Latch Failure (Recall 15S27 / 16S36)" and "Engine Coolant Leak from Thermostat Housing". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2018 Ford Fiesta uses 5W-20 Full Synthetic motor oil (4.3 qt capacity), requires lug nuts torqued to 100 ft-lbs, takes DOT 3 brake fluid.
Manufacturer-recommended maintenance schedule for the 2018 Ford Fiesta. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2018 Ford Fiesta.
Common problems reported by 2018 Ford Fiesta owners, with recommended fixes and estimated repair costs.
PowerShift DCT Transmission Shudder and Failure
The DPS6 PowerShift dual-clutch transmission in the 2011-2019 Fiesta suffers the same catastrophic defects as the Focus. Owners experience violent shuddering, jerking, loss of acceleration, unexpected rollback, and complete transmission failure. The Fiesta's lighter weight makes the jerking even more pronounced and dangerous in traffic.
Ford extended the clutch warranty to 7 years/100,000 miles. The repair involves replacing the clutch assembly, input shaft seals, and reprogramming the TCM per TSB 18-2512. In severe cases, a complete transmission replacement is necessary. Check eligibility under the Vargas v. Ford class-action settlement.
Est. Cost: $0 under extended warranty/settlement; $1,500 - $3,500 for clutch/transmission replacement out of pocketDoor Latch Failure (Recall 15S27 / 16S36)
The Fiesta is affected by Ford's massive door latch recall covering millions of vehicles. The door latch pawl spring tab can fracture due to a materials defect, preventing the door from latching securely. An unlatched door may open while driving at any speed.
Ford issued recalls 15S27 and 16S36 to replace all affected door latches with an improved design. Contact your dealer to verify your VIN. The repair is free of charge. Do not attempt to hold the door closed with aftermarket solutions.
Est. Cost: Covered under recallEngine Coolant Leak from Thermostat Housing
The plastic thermostat housing on the 1.6L engine cracks and leaks coolant, similar to the Focus. The leak may start small but worsens over time. If the coolant level drops far enough, the engine will overheat, potentially causing head gasket or head warping damage.
Replace the thermostat housing with an updated part or an aftermarket aluminum housing. Replace the thermostat and coolant at the same time. Inspect the radiator hoses for deterioration while the system is drained.
Est. Cost: $150 - $400Heater Core Failure and Coolant Smell in Cabin
The heater core can develop leaks, causing a sweet coolant smell inside the cabin, foggy windshield on cold starts, and wet carpet on the passenger side floor. Coolant loss from a leaking heater core can also lead to engine overheating if not noticed promptly.
Replace the heater core. On the Fiesta, this requires partial dashboard removal and is labor-intensive. Flush the cooling system after replacement. As a temporary measure, the heater core can be bypassed by connecting the two heater hoses together, though this eliminates cabin heat.
Est. Cost: $500 - $1,200Electric Power Steering Failure
The electric power steering system can fail without warning, causing a sudden increase in steering effort. A 'Power Steering Malfunction' or 'Service Power Steering' message appears on the dashboard. The issue is caused by a failing steering column motor or control module and is a significant safety concern at low speeds during parking.
Have the dealer diagnose the steering column with a scan tool. The repair may involve replacing the EPS motor, steering column module, or the entire steering column assembly. Ford issued a TSB addressing EPS failures on 2011-2017 Fiesta models. Check for recall applicability.
Est. Cost: $400 - $1,000 for motor/module; $800 - $1,500 for steering column assembly