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2019 ford Flex vs 2019 kia Optima

Reliability comparison based on NHTSA recall and complaint records.

Synced 2026-04-29 Source: NHTSA public records Reviewed by ASE-certified contributors
Quick verdict
The 2019 Kia Optima edges ahead — narrowly

2019 ford Flex

3.4/5
Reliability score
197 complaints
3 recalls (0 critical)
$6,700 repair exposure
vs
More reliable

2019 kia Optima

3.6/5
Reliability score
193 complaints
1 recalls (0 critical)
$10,800 repair exposure

Stories from the shop

The 2019 kia Optima edges this one, but it's tight. We're talking 3.6 versus 3.4 on the reliability index. Close enough that the right answer for you might be the other truck — depends what you're using it for and what you can afford to fix when something does go.

If you're leaning 2019 ford Flex, know what you're getting into on body and visibility. Those categories have noticeably more complaints than what the 2019 kia Optima sees, and they're not cheap items when they go.

Going with the 2019 kia Optima? Watch the engine and powertrain. The 2019 ford Flex has fewer reports in those categories, so you'd be trading one set of weak spots for another.

On the dollars-and-cents side, total repair exposure across the top problem areas runs 1.6x higher on the 2019 kia Optima. That's the number to keep in mind when you're pricing the deal — a $2,000 difference in purchase price disappears the first time you're staring at a transmission rebuild.

Bottom line: pick based on use case more than the spec sheet. If you tow heavy and don't want to think about it, that's one calculation. If you're a daily driver and want the cheapest path forward, that's another. Both of these will get you down the road. We're just telling you where each one is most likely to break.

— ProblemsByVin editorial team, drawing on the NHTSA data and shop experience.

Side-by-side by problem area

Category
2019 ford Flex
2019 kia Optima
engine
4 reports
moderate · ~$3,100
57 reports
moderate · ~$3,100
body
37 reports
severe · ~$1,500
13 reports
moderate · ~$1,500
electrical
18 reports
moderate · ~$850
17 reports
severe · ~$850
powertrain
No reports
15 reports
moderate · ~$2,500
airbags
No reports
12 reports
severe · ~$1,100
brakes
No reports
12 reports
severe · ~$450
visibility
6 reports
moderate · ~$350
No reports
cruise control
No reports
6 reports
severe · ~$600
steering
No reports
6 reports
moderate · ~$700
suspension
5 reports
moderate · ~$900
No reports

Common questions

Which is more reliable, the 2019 Ford Flex or the 2019 Kia Optima?

Based on the NHTSA data we track, the 2019 Kia Optima comes out ahead with a reliability score of 3.6 versus 3.4. The margin is narrow, so the verdict could shift if you weight specific categories differently or factor in your own use case.

What goes wrong more often on the 2019 Ford Flex?

Compared to the 2019 Kia Optima, the 2019 Ford Flex sees more reported issues in body and visibility. That doesn't mean it's a bad truck — it means those are the categories worth budgeting for if you go that direction.

What goes wrong more often on the 2019 Kia Optima?

Compared to the 2019 Ford Flex, the 2019 Kia Optima has more complaints in engine and powertrain. Whether that's a deal-breaker depends on the cost and severity — see the comparison table above for repair cost ranges.

Which has more recalls?

The 2019 Ford Flex has more active recalls (3 vs 1). Total count is less important than severity, though — a vehicle with one critical recall and zero moderate ones is generally riskier than one with five moderate recalls.

Is an extended warranty worth it on either of these?

Both vehicles are out of factory bumper-to-bumper coverage at this point. Combined repair exposure across the top problem categories runs around $10,800 on the higher-risk vehicle. A quality service contract typically costs $1,800–3,500 over 3 years, so a single major failure usually pays for the contract. The math favors warranty coverage on whichever vehicle you choose, especially if you plan to keep it past 100,000 miles.

Related comparisons

Reliability scores, complaint counts, and severity ratings derived from the NHTSA public records database. "Repair exposure" is the sum of average independent-shop repair costs across each vehicle's tracked problem categories and is intended as a relative comparison, not an exact prediction. Editorial commentary auto-generated from the data and reviewed by ASE-certified contributors. Some links on this page are affiliate links.
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