Is the KIA K5 more reliable than the Ford Fusion?

Yes, the K5 has a clear edge. It drew 10.2 complaints per 10,000 sold, against 21.1 for the Fusion. The Fusion's worst problems, a cracked flex plate and coolant leaking into the cylinders, often lead to engine or transmission work.

Which has more recalls, the K5 or the Fusion?

The K5 has more. Federal recall records show 20 across its 6 model years, against 8 across the Fusion's 3 model years. The K5 also covers more model years. Check any specific car's VIN for open recalls before you buy.

What is the biggest problem with the Ford Fusion?

Engine and drivetrain failure. A cracked flex plate causes rattling or knocking at idle, usually with no warning light. Coolant can also leak into the cylinders, and diagnosed cases ended in engine or short block replacement. Owners mostly blame the 1.5L EcoBoost.

What goes wrong on the KIA K5?

Electrical faults lead the complaints. Headlights, the instrument cluster, and the radio can shut off while driving. Owners also report a swelling fuel tank, hard shifts on cold starts, and loose exterior trim. Losing headlights at night is the main safety risk.

How much does it cost to repair a Ford Fusion?

Independent repair-cost data puts the Fusion at about $581 a year, with 0.3 unscheduled shop visits per year. A repair has a 12% chance of being major. Repair-cost data for the K5 is not available here, so a direct cost comparison is not possible.

Last updated: 2026-10-10

Ford Fusion vs Kia K5: Reliability Compared

Ford Fusion

Good

More Reliable

Kia K5

Good

The KIA K5 comes out ahead of the Ford Fusion on reliability. Owners filed about half as many complaints per car sold. The Fusion's cracked flex plates and coolant-in-cylinder engine failures are the main reason it falls behind.

How Do the Ford Fusion and Kia K5 Generations Compare?

Early fifth-generation cars make up the K5's weakest years. That generation, known as DL3, covers US model years 2021 to 2023 in the data, and a first facelift arrived in 2025. So 2021 and 2022 are early, pre-facelift builds. Newer years have had less time to gather complaints, which is not the same as being better. The Fusion years covered here, 2018 to 2020, fall late in its second generation, which began in 2013. That generation received facelifts in 2017 and 2019. A 2018 car predates the 2019 facelift, while 2019 and 2020 cars came after it.

Ford Fusion vs Kia K5: Which Is More Reliable?

Ford Fusion vs Kia K5 at-a-glance reliability comparison
Metric	Ford Fusion	Kia K5
Reliability Score	69/100	75/100
Years Tracked	3	6
Total Recalls	8	20
Complaints per 10k Sold	21.1	10.2
Safety RatingNHTSA overall	2020 NHTSA	2026 NHTSA
Frontal
Side
Rollover

What Are the Common Problems With the Ford Fusion and Kia K5?

Drivetrain failure defines the Fusion. A cracked flex plate causes rattling at idle, often with no warning light. Coolant leaks into the cylinders and can end in a full engine replacement. Control arms can snap in turns, and the steering, power train, and electrical areas all carry crash-linked reports, including a car that rolled while in park. The K5 is more scattered. Headlights and the instrument cluster shut off while driving, the fuel tank can swell, and trim or sunroof glass can come off. Cold-morning hard shifts show up too.

Ford Fusion vs Kia K5 common problem areas comparison
Component	Ford Fusion	Kia K5
ENGINE	5.7Average	0.6Very Low
POWER TRAIN	5Average	1.2Low
ELECTRICAL SYSTEM	2.6Low	1.7Low
ENGINE AND ENGINE COOLING	2.9Low	—None
UNKNOWN OR OTHER	1.5Low	0.9Very Low
FUEL/PROPULSION SYSTEM	0.2Very Low	1.2Low
STEERING	0.8Very Low	0.4Very Low
AIR BAGS	0.3Very Low	0.6Very Low
STRUCTURE	—None	0.8Very Low
FUEL SYSTEM	0.1Very Low	0.6Very Low
WHEELS	0.2Very Low	0.1Very Low
VEHICLE SPEED CONTROL	0.2Very Low	0.1Very Low
SERVICE BRAKES	0.1Very Low	0.1Very Low
SEATS	—None	0.2Very Low
SUSPENSION	0.1Very Low	—None
SEAT BELTS	0.1Very Low	—None
TIRES	—None	0.1Very Low
VISIBILITY/WIPER	—None	0.1Very Low
FORWARD COLLISION AVOIDANCE	—None	0.1Very Low
LANE DEPARTURE	—None	0.1Very Low

Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.

Who Should Buy the Ford Fusion vs the Kia K5?

Choose the K5 if you want the lower odds of an expensive drivetrain failure. Its owner complaints run about half the Fusion's rate. Avoid 2021 and 2022, the weakest years. Newer K5s show fewer complaints partly because they have had less time to collect them, so that is not proof they are better. Before buying any K5, have a dealer run the VIN for open recalls, ask about the fuel tank, test the headlights and dash, and drive it cold to check for hard shifts. Choose the Fusion only if the price is right and you can verify its condition. Steer clear of 2018, which is listed among the weakest years. The 2019 model appears on both the strong and weak lists, so inspect that car closely. Be wary of the 1.5L EcoBoost unless a shop has cleared the flex plate and head gasket. Owners report those failures mostly between 65,000 and 96,448 miles. Ask for repair records, listen for rattling at idle, and check that the coolant level holds steady.

Ford Fusion vs Kia K5: Common Questions

Is the KIA K5 more reliable than the Ford Fusion?: Yes, the K5 has a clear edge. It drew 10.2 complaints per 10,000 sold, against 21.1 for the Fusion. The Fusion's worst problems, a cracked flex plate and coolant leaking into the cylinders, often lead to engine or transmission work.
Which has more recalls, the K5 or the Fusion?: The K5 has more. Federal recall records show 20 across its 6 model years, against 8 across the Fusion's 3 model years. The K5 also covers more model years. Check any specific car's VIN for open recalls before you buy.
What is the biggest problem with the Ford Fusion?: Engine and drivetrain failure. A cracked flex plate causes rattling or knocking at idle, usually with no warning light. Coolant can also leak into the cylinders, and diagnosed cases ended in engine or short block replacement. Owners mostly blame the 1.5L EcoBoost.
What goes wrong on the KIA K5?: Electrical faults lead the complaints. Headlights, the instrument cluster, and the radio can shut off while driving. Owners also report a swelling fuel tank, hard shifts on cold starts, and loose exterior trim. Losing headlights at night is the main safety risk.
How much does it cost to repair a Ford Fusion?: Independent repair-cost data puts the Fusion at about $581 a year, with 0.3 unscheduled shop visits per year. A repair has a 12% chance of being major. Repair-cost data for the K5 is not available here, so a direct cost comparison is not possible.

More Ford Fusion comparisons

Ford Fusion vs Honda Accord reliability Ford Fusion vs Toyota Camry reliability Ford Fusion vs Nissan Altima reliability Ford Fusion vs Hyundai Sonata reliability Ford Fusion reliability by year Ford Fusion years to avoid

More Kia K5 comparisons

Kia K5 vs Toyota Camry reliability Kia K5 vs Nissan Altima reliability Kia K5 vs Hyundai Sonata reliability Kia K5 vs Buick Regal reliability Kia K5 reliability by year Kia K5 years to avoid

Decided between Ford Fusion and Kia K5? Run a VIN check before you buy — uncover hidden accidents, title issues, and open recalls.

Look Up a VIN →

How we score the Ford Fusion and Kia K5

Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.

See incorrect data? Report an issue