2018 Kia Optima Dimensions, Sizes & Specifications
Based on 5 trims — exact values when identical, ranges when trims differ. Generation: Fourth generation (JF).
- Length191.1 in
- Width73.2 in
- Height57.7 in
- Wheelbase110.4 in
- Ground clearance5.3 in
- Curb weight3,219 lb – 3,494 lb
- Length191.1 in
- Height57.7 in
- Wheelbase110.4 in
- Ground clearance5.3 in
- Curb weight3,219 lb – 3,494 lb
- Width73.2 in
Proportional exterior silhouette from catalog length, width and height. The explorer below is a systems map — different purpose, not a second silhouette.
Explore your 2018 Kia Optima
Interactive systems diagram for this model year — measure, check fitment, and open the matching SpecSizes tools. Schematic only; not photorealistic body styling.
- Dimensions
- Wheels
- Tires
- Wipers
- Battery
- Oil
- Interior
Available for this vehicle
- Dimensions
- Wheels
- Tires
- Wipers
- Battery
- Oil
- Interior
Select a system below or on the diagram. This schematic marks measurement areas — it is not body-accurate styling.
Catalog summaries
Exterior: 191.1 in · 73.2 in · 57.7 in. Full dimensions
Wheels: bolt pattern 5x114.3, bore 67.1 mm. Wheel sizes
Tires: P215/55VR17.0 BSW AS, P205/65HR16.0 BSW AS, P235/45VR18.0 BSW AS, 205/65R16…. Tire sizes
What do you want to check?
- Compare this vehicleSize vs a competitor
- See size by yearModel history & chart
- Will it fit in my garage?Door & bay clearance calculator
- Find cars similar in sizeExterior length, width & height neighbors
- Browse cars by sizeReverse-search by length, width & height
- Check tire sizeOEM tire sizes
- Check wiper sizeBlade lengths
- Check battery sizeGroup size
- Check oil capacityCapacity & viscosity
- Check wheel sizeBolt pattern, bore, offset
- Wheel fitment & interchangeCompare donor or custom wheels
Exterior dimensions
| Length | 191.1 in |
|---|---|
| Width | 73.2 in |
| Height | 57.7 in |
| Wheelbase | 110.4 in |
| Ground clearance | 5.3 in |
Interior dimensions
| Front headroom | 40.0 in |
|---|---|
| Rear headroom | 38.0 in |
| Front legroom | 45.5 in |
| Rear legroom | 35.6 in |
| Front shoulder room | 58.0 in |
| Rear shoulder room | 56.0 in |
| Front hip room | 56.0 in |
| Rear hip room | 56.0 in |
Weight & capacities
| Curb weight | 3,219 lb – 3,494 lb |
|---|---|
| GVWR | 4,321 lb – 4,673 lb |
| Fuel tank | 18.5 gal |
| Max towing capacity | 2,000 lb |
Engine
- 1878 1912
- 1883 1912
- 1868 1912
| Torque | 178 – 260 lb-ft |
|---|
Torque shown in lb-ft as stored in the catalog.
Wheels, tires & maintenance sizes
Tire sizes Full tire size page → · Wheel fitment →
- P215/55VR17.0 BSW AS
- P205/65HR16.0 BSW AS
- P235/45VR18.0 BSW AS
- 205/65R16
- 215/50R18
- 215/55R17
- 215/60R16
- 235/45R18
- 245/40R19
Wiper sizes Full wiper size page →
- Driver26"
- Passenger18"
Battery group size Full battery size page →
- H6-AGM
- H7-AGM
Oil capacity Full oil capacity page →
- 5W-305.1 qt
- 5W-304.8 qt
- 5W-305.1 qt
Trim-by-trim dimensions (5 trims)
| Trim | Length | Width | Height | Wheelbase | Clearance | Curb wt |
|---|---|---|---|---|---|---|
| EX 4dr Sedan | 191.1 | 73.2 | 57.7 | 110.4 | 5.3 | 3362 |
| LX 4dr Sedan | 191.1 | 73.2 | 57.7 | 110.4 | 5.3 | 3219 |
| LX Turbo 4dr Sedan | 191.1 | 73.2 | 57.7 | 110.4 | 5.3 | 3224 |
| S 4dr Sedan | 191.1 | 73.2 | 57.7 | 110.4 | 5.3 | 3362 |
| SX Turbo 4dr Sedan | 191.1 | 73.2 | 57.7 | 110.4 | 5.3 | 3494 |
Values in inches / pounds as stored. Ranges above reflect trim variation.
Same generation (Fourth generation (JF)): years 2016–2018. View model overview