Car comparison

AUDI A6 Sedan (C8) 45 TFSIvsKia Optima IV · Facelift 2018 2.0 T-GDI

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

AUDI A6 Sedan (C8)

45 TFSI

245 hp1984 ccGasolineFWDAutomaticTurbochargedSedan2019-2020
VS

Kia Optima IV · Facelift 2018

2.0 T-GDI

238 hp1998 ccGasolineFWDAutomaticTurbochargedSedan2018-2020

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

AUDI A6 Sedan (C8) 45 TFSI

  • Quickest 0-100 km/h
    6.8 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    245 hp
    183 kW
  • Highest torque
    370 Nm
    273 lb-ft
  • Lightest
    1,640 kg
    3,616 lb
  • Best power-to-weight
    149 hp/t
    111 kW/t
    6.7 kg/hp
  • Lowest combined fuel consumption
    6.5 L/100 km
    36.2 mpg US
    43.5 mpg UK
  • Lowest city consumption
    8.0 L/100 km
    29.4 mpg US
    35.3 mpg UK
  • Lowest highway consumption
    5.7 L/100 km
    41.3 mpg US
    49.6 mpg UK
  • Best estimated range
    969 km
    602 mi
  • Largest trunk
    530 L
  • Best overall score
    65/100
  • Best performance score
    59/100
  • Best economy score
    89/100
  • Best practicality score
    77/100

Specification comparison

Specification comparison
ModelAUDIA6 Sedan (C8)45 TFSIKiaOptima IVFacelift 20182.0 T-GDI
Power
245hp183kW
238hp177kW
Torque
370Nm273lb-ft
353Nm260lb-ft
Curb weight
1,640kg3,616lb
1,680kg3,704lb
Gross weight
2,230kg4,916lb
2,120kg4,674lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Calculated
To 99% top speed
70.0s99% target: 257 km/h / 160 mph
Calculated
73.0s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
6.8s
7.4s
0-200 km/h
21.4s
Calculated
24.4s
Calculated
0-60 mph
6.5s
Calculated
7.1s
Calculated
Fuel consumption
6.5L/100 km36.2mpg US43.5mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Fuel consumption city
8L/100 km29.4mpg US35.3mpg UK
13.2L/100 km17.8mpg US21.4mpg UK
Fuel consumption highway
5.7L/100 km41.3mpg US49.6mpg UK
7L/100 km33.6mpg US40.4mpg UK
Quarter mile
14.7s
Calculated
15.2s
Calculated
Power-to-weight
149hp/t111kW/t68hp/1000 lb
Calculated
142hp/t106kW/t64hp/1000 lb
Calculated
Torque-to-weight
226Nm/t151lb-ft/ton
Calculated
210Nm/t141lb-ft/ton
Calculated
Estimated range
969km602mi
Calculated
753km468mi
Calculated
Displacement
1,984cc121cu in
1,998cc122cu in
Length
4,939mm194in
4,855mm191in
Width
1,886mm74in
1,860mm73in
Height
1,457mm57in
1,475mm58in
Wheelbase
2,924mm115in
2,805mm110in
Front track
1,630mm64in
1,607mm63in
Rear track
1,617mm64in
1,614mm64in
Trunk volume
530L
510L
Doors
4
4
Seats
5
5
Fuel tank
63L
70L
CO2 emissions
149g/km
-

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

AUDI A6 Sedan (C8) 45 TFSIKia Optima IV Facelift 2018 2.0 T-GDIPowerTorque
  • AUDI A6 Sedan (C8) 45 TFSI: Power / Torque
  • Kia Optima IV Facelift 2018 2.0 T-GDI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Sedan (C8)45 TFSI5,000-6,500 rpm1,600-4,300 rpm6,750 rpm
KiaOptima IVFacelift 20182.0 T-GDI6,000 rpm1,350-4,000 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Sedan (C8)45 TFSIKiaOptima IVFacelift 20182.0 T-GDI
Acceleration checkpoints
0-60 mph
0-97 km/h
6.5 s
7.1 s
0-100 km/h
0-62 mph
6.8 s
7.4 s
0-200 km/h
0-124 mph
21.4 s
24.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Likely limited
Drag race simulation
60 ft
18 m
2.7 s
2.8 s
330 ft
101 m
6.7 s
6.9 s
1/8 mile
201 m
9.8 s
10.2 s
1000 ft
305 m
12.5 s
12.9 s
1/4 mile
402 m
14.7 s
15.2 s
Trap speed
1/4 mile
402 m
166 km/h
103 mph
160 km/h
99 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
245 hp
183 kW
KiaOptima IVFacelift 20182.0 T-GDI
238 hp
177 kW

AUDI A6 Sedan (C8) 45 TFSI has 7 hp more than Kia Optima IV Facelift 2018 2.0 T-GDI.

The biggest power difference is between Kia Optima IV Facelift 2018 2.0 T-GDI and AUDI A6 Sedan (C8) 45 TFSI: 7 hp (5 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
370 Nm
273 lb-ft
KiaOptima IVFacelift 20182.0 T-GDI
353 Nm
260 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
1,640 kg
3,616 lb
KiaOptima IVFacelift 20182.0 T-GDI
1,680 kg
3,704 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
KiaOptima IVFacelift 20182.0 T-GDI
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI6.8 s
KiaOptima IVFacelift 20182.0 T-GDI7.4 s

The biggest 0-100 km/h difference is between AUDI A6 Sedan (C8) 45 TFSI and Kia Optima IV Facelift 2018 2.0 T-GDI: 0.6 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
6.5 L/100 km
36.2 mpg US
43.5 mpg UK
KiaOptima IVFacelift 20182.0 T-GDI
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

The biggest fuel consumption difference is between AUDI A6 Sedan (C8) 45 TFSI and Kia Optima IV Facelift 2018 2.0 T-GDI: 2.8 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
149 hp/t
111 kW/t
6.7 kg/hp
KiaOptima IVFacelift 20182.0 T-GDI
142 hp/t
106 kW/t
7.1 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TFSI
969 km
602 mi
KiaOptima IVFacelift 20182.0 T-GDI
753 km
468 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Sedan (C8)45 TFSI
245 hp
183 kW
6.8 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
KiaOptima IVFacelift 20182.0 T-GDI
238 hp
177 kW
7.4 s
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
AUDIA6 Sedan (C8)45 TFSI
Power
245 hp
183 kW
0-100 km/h6.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,939 mm
194.4 in
Height
1,457 mm
57.4 in
KiaOptima IVFacelift 20182.0 T-GDI
Power
238 hp
177 kW
0-100 km/h7.4 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Doors/seats
4 doors
5 seats
Trunk
510 L
18.0 cu ft
Length
4,855 mm
191.1 in
Height
1,475 mm
58.1 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
AUDIA6 Sedan (C8)45 TFSI
Power
245 hp
183 kW
0-100 km/h6.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.5 L/100 km
36.2 mpg US
43.5 mpg UK
KiaOptima IVFacelift 20182.0 T-GDI
Power
238 hp
177 kW
0-100 km/h7.4 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

AUDI A6 Sedan (C8) 45 TFSI is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
AUDIA6 Sedan (C8)45 TFSI
6.5 L/100 km
36.2 mpg US
43.5 mpg UK
6.8 s
KiaOptima IVFacelift 20182.0 T-GDI
9.3 L/100 km
25.3 mpg US
30.4 mpg UK
7.4 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
AUDIA6 Sedan (C8)45 TFSI
149 hp/t
111 kW/t
6.7 kg/hp
6.5 L/100 km
36.2 mpg US
43.5 mpg UK
KiaOptima IVFacelift 20182.0 T-GDI
142 hp/t
106 kW/t
7.1 kg/hp
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Sedan (C8)45 TFSIKiaOptima IVFacelift 20182.0 T-GDI
Power
245 hp
183 kW
238 hp
177 kW
Torque
370 Nm
273 lb-ft
353 Nm
260 lb-ft
Acceleration
6.8 s
7.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Lightness
1,640 kg
3,616 lb
1,680 kg
3,704 lb
Fuel consumption
6.5 L/100 km
36.2 mpg US
43.5 mpg UK
9.3 L/100 km
25.3 mpg US
30.4 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,939 mm
194.4 in
Height
1,457 mm
57.4 in
Doors/seats
4 doors
5 seats
Trunk
510 L
18.0 cu ft
Length
4,855 mm
191.1 in
Height
1,475 mm
58.1 in
Range score
969 km
602 mi
753 km
468 mi
CO2 score
149 g/km
-
Trunk score
530 L
18.7 cu ft
510 L
18.0 cu ft
Power-to-weight score
149 hp/t
111 kW/t
6.7 kg/hp
142 hp/t
106 kW/t
7.1 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleAUDI A6 Sedan (C8) 45 TFSIKia Optima IV Facelift 2018 2.0 T-GDI
Consumption6.5 L/100 km36.2 mpg US43.5 mpg UK9.3 L/100 km25.3 mpg US30.4 mpg UK
Cost / 100 km11.38 LC100 km16.28 LC100 km
Cost / 100 mi18.31 LC100 mi26.19 LC100 mi
Annual fuel used975 L258 US gal214 UK gal1,395 L369 US gal307 UK gal
Annual fuel cost1,706 LC/year2,441 LC/year

Head-to-head comparisons

AUDI A6 Sedan (C8) 45 TFSI

  • Has 7 hp more
  • Has 17 Nm more
  • Is 40 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Uses 2.8 L/100 km less fuel
  • Has 8 hp/t better power-to-weight
  • Has 217 km (135 mi) more estimated range
  • Has 20 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Kia Optima IV Facelift 2018 2.0 T-GDI

No measurable advantages in the available data.

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 Sedan (C8) 45 TFSI
Kia Optima IV 2.0 T-GDI
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