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Kia · Mid-Size · 2015–2020

Kia Optima JF

Weaknesses, engine ratings and buying advice

★★★★★
3.0 / 5.0 · Based on 3 engine variants
Most Fun Engine

238–247 PS

2.0L T-GDi (Theta III) Benzin

Powerful mid-range saloon

Decent

Body Variants

The Kia Optima JF is available as Limousine and Sportswagon — choose your body type for specific insurance data:

Limousine
3 Engines
view Limousine →
Sportswagon
3 Engines
view Sportswagon →

Generations

Engine Overview

The Kia Optima JF is available with 4 engine variants — from 116 to 247 hp.

1.7 CRDi · Diesel· 135–141 PS
2015 2020
Be Careful 7 weaknesses
Show all weaknesses →
1.7 CRDi DCT · Diesel· 135–141 PS
2015 2020
Be Careful 7 weaknesses
Show all weaknesses →
2.0 CVVT · Benziner· 163–165 PS
2015 2020
Be Careful 5 weaknesses
Show all weaknesses →
GT 2.0 T-GDi · Benziner· 238–245 PS
2015 2020
Be Careful 4 weaknesses
Show all weaknesses →

The Kia 1.7 CRDi (Diesel, 135–141 PS) has the D4FD (1.7L CRDi (U2)) — rated: "Be Careful", 7 known weaknesses.

The Kia 1.7 CRDi DCT (Diesel, 135–141 PS) has the D4FD (1.7L CRDi (U2)) — rated: "Be Careful", 7 known weaknesses.

The Kia 2.0 CVVT (Benziner, 163–165 PS) has the G4NB (2.0L CVVT (Nu)) — rated: "Be Careful", 5 known weaknesses.

The Kia GT 2.0 T-GDi (Benziner, 238–245 PS) has the G4KL (2.0L T-GDi (Theta III)) — rated: "Be Careful", 4 known weaknesses.

Vehicle Weaknesses

WeaknessCost
●Rusting brake calipers and discs

Brake calipers and discs on the Optima JF show a strong tendency to rust. Uncoated brake disc faces rust heavily after rain. Stuck calipers lead to uneven pad wear and increased fuel consumption.

Symptoms: Brakes drag after pulling away, uneven pad wear, vehicle pulls to one side under braking, squealing brakes after parking.
from 60,000 km
Ad brake caliper Kia Optima JFbrake disc Kia Optima 2016brake pad Kia Optima 2.0
 Low
NHTSA Owner Complaints
Below Average
2,489 complaints · 2015–2020
Engine
1460 ⚠ 15
Other
367 ⚠ 10
Electrical
316 ⚠ 11
Powertrain
189 ⚠ 3
Brakes
156 ⚠ 15

Top Reported Issues

⚠ Engine (1460 complaints)
⚠ Other (367 complaints)
⚠ Electrical (316 complaints)
Source: NHTSA (nhtsa.gov) · 2026-03

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Known Problems and Issues

A total of 23 weaknesses have been documented for the Kia Optima JF (2015–2020) — 16 engine-related and 7 vehicle-related. Typical issues affect Brakes, Suspension, Gearbox, Electronics.

Optima (D4FD, 2015–2020) — Be Careful: EGR valve seized by soot deposits, Injectors and sealing washer wear, DPF blockage from approx. 150,000 km. Power: 135–141 PS.

Optima (G4KL, 2015–2020) — Be Careful: Connecting rod bearing damage from manufacturing residue, Oil pump wears prematurely at high mileage, Oil consumption from piston ring gap (Smartstream/Theta III). Power: 238–245 PS.

Optima (G4NB, 2015–2020) — Be Careful: Excessive oil consumption — recall and class action, Carbon deposits on intake valves, Injectors blocked / fuel pressure problems. Power: 163–165 PS.

What to watch out for with the Kia Optima? See the detailed listing of all engine and vehicle weaknesses in the sections above.

Frequently Asked Questions

What problems and weaknesses does the Kia Optima JF have? +
The Kia Optima JF has 16 known engine weaknesses and 7 vehicle weaknesses.
What should I look for when buying a used Kia Optima JF? +
faq.watch_a_none
Which engine is recommended? +
Be careful: G4KL (2.0L T-GDi (Theta III)), G4NB (2.0L CVVT (Nu)), D4FD (1.7L CRDi (U2)). No engine is rated 'Good Choice'. The most fun to drive is the G4KL (2.0L T-GDi (Theta III)).
Which Kia Optima JF engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Kia Optima JF — rated: "Decent". {description} 245 hp turbo in the Optima JF delivers commanding performance. Not exciting enough for driving enthusiasts, but excellent as a touring car.
Is the Kia Optima JF worth buying used? +
The Kia Optima JF requires careful consideration — choosing the right engine variant is crucial.
What horsepower variants are available for the Kia Optima JF? +
The Kia Optima JF is available with engine variants from 116 to 247 hp. Petrol: G4KL (2.0L T-GDi (Theta III)), G4NB (2.0L CVVT (Nu)). Diesel: D4FD (1.7L CRDi (U2)).

Last updated: February 2026 · All information without guarantee