Car comparison

AUDI S6 (4B/C5) 4.2 V8vsOpel Omega B · Facelift 1999 5.7i V8

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

New comparison

AUDI S6 (4B/C5)

4.2 V8

340 hp4172 ccGasolineAWDAutomaticNaturally aspiratedSedan1999-2005
VS

Opel Omega B · Facelift 1999

5.7i V8

310 hp5665 ccGasolineRWDAutomaticNaturally aspiratedSedan2000-2001

Comparison overview

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

Best choices

Opel Omega B Facelift 1999 5.7i V8

  • Highest torque
    450 Nm
    332 lb-ft
  • Lightest
    1,650 kg
    3,638 lb
  • Lowest combined fuel consumption
    14.0 L/100 km
    16.8 mpg US
    20.2 mpg UK
  • Lowest city consumption
    18.0 L/100 km
    13.1 mpg US
    15.7 mpg UK
  • Lowest highway consumption
    10.0 L/100 km
    23.5 mpg US
    28.2 mpg UK
  • Largest trunk
    530 L
  • Best overall score
    67/100
  • Best practicality score
    77/100

AUDI S6 (4B/C5) 4.2 V8

  • Quickest 0-100 km/h
    6.7 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    340 hp
    254 kW
  • Best power-to-weight
    193 hp/t
    144 kW/t
    5.2 kg/hp
  • Best estimated range
    573 km
    356 mi
  • Best performance score
    63/100
  • Best economy score
    69/100

Specification comparison

Specification comparison
ModelAUDIS6 (4B/C5)4.2 V8OpelOmega BFacelift 19995.7i V8
Power
340hp254kW
310hp231kW
Torque
420Nm310lb-ft
450Nm332lb-ft
Curb weight
1,760kg3,880lb
1,650kg3,638lb
Gross weight
2,300kg5,071lb
2,195kg4,839lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
70.2s99% target: 257 km/h / 160 mph
Calculated
70.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
6.7s
7.0s
0-200 km/h
21.3s
Calculated
21.8s
Calculated
0-60 mph
6.4s
Calculated
6.7s
Calculated
Fuel consumption
14.3L/100 km16.4mpg US19.8mpg UK
14L/100 km16.8mpg US20.2mpg UK
Fuel consumption city
21.8L/100 km10.8mpg US13.0mpg UK
18L/100 km13.1mpg US15.7mpg UK
Fuel consumption highway
10.1L/100 km23.3mpg US28.0mpg UK
10L/100 km23.5mpg US28.2mpg UK
Quarter mile
14.6s
Calculated
14.9s
Calculated
Power-to-weight
193hp/t144kW/t88hp/1000 lb
Calculated
188hp/t140kW/t85hp/1000 lb
Calculated
Torque-to-weight
239Nm/t160lb-ft/ton
Calculated
273Nm/t182lb-ft/ton
Calculated
Estimated range
573km356mi
Calculated
536km333mi
Calculated
Displacement
4,172cc255cu in
5,665cc346cu in
Length
4,833mm190in
4,898mm193in
Width
1,850mm73in
1,775mm70in
Height
1,443mm57in
1,450mm57in
Wheelbase
2,759mm109in
2,730mm107in
Front track
1,578mm62in
1,514mm60in
Rear track
1,590mm63in
1,528mm60in
Ground clearance-
140mm6in
Trunk volume
434L
530L
Max trunk volume-
830L
Doors
4
4
Seats
5
5
Fuel tank
82L
75L
CO2 emissions
343g/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 S6 (4B/C5) 4.2 V8Opel Omega B Facelift 1999 5.7i V8PowerTorque
  • AUDI S6 (4B/C5) 4.2 V8: Power / Torque
  • Opel Omega B Facelift 1999 5.7i V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIS6 (4B/C5)4.2 V87,000 rpm3,400 rpm7,250 rpm
OpelOmega BFacelift 19995.7i V85,600 rpm4,400 rpm5,850 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIS6 (4B/C5)4.2 V8OpelOmega BFacelift 19995.7i V8
Acceleration checkpoints
0-60 mph
0-97 km/h
6.4 s
6.7 s
0-100 km/h
0-62 mph
6.7 s
7.0 s
0-200 km/h
0-124 mph
21.3 s
21.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.6 s
2.7 s
330 ft
101 m
6.6 s
6.8 s
1/8 mile
201 m
9.8 s
10.0 s
1000 ft
305 m
12.4 s
12.6 s
1/4 mile
402 m
14.6 s
14.9 s
Trap speed
1/4 mile
402 m
167 km/h
104 mph
165 km/h
103 mph

Power comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
340 hp
254 kW
OpelOmega BFacelift 19995.7i V8
310 hp
231 kW

AUDI S6 (4B/C5) 4.2 V8 has 30 hp more than Opel Omega B Facelift 1999 5.7i V8.

The biggest power difference is between Opel Omega B Facelift 1999 5.7i V8 and AUDI S6 (4B/C5) 4.2 V8: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
420 Nm
310 lb-ft
OpelOmega BFacelift 19995.7i V8
450 Nm
332 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
1,760 kg
3,880 lb
OpelOmega BFacelift 19995.7i V8
1,650 kg
3,638 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
OpelOmega BFacelift 19995.7i V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V86.7 s
OpelOmega BFacelift 19995.7i V87.0 s

The biggest 0-100 km/h difference is between AUDI S6 (4B/C5) 4.2 V8 and Opel Omega B Facelift 1999 5.7i V8: 0.3 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
14.3 L/100 km
16.4 mpg US
19.8 mpg UK
OpelOmega BFacelift 19995.7i V8
14.0 L/100 km
16.8 mpg US
20.2 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
193 hp/t
144 kW/t
5.2 kg/hp
OpelOmega BFacelift 19995.7i V8
188 hp/t
140 kW/t
5.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIS6 (4B/C5)4.2 V8
573 km
356 mi
OpelOmega BFacelift 19995.7i V8
536 km
333 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIS6 (4B/C5)4.2 V8
340 hp
254 kW
6.7 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
OpelOmega BFacelift 19995.7i V8
310 hp
231 kW
7.0 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
AUDIS6 (4B/C5)4.2 V8
Power
340 hp
254 kW
0-100 km/h6.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
434 L
15.3 cu ft
Length
4,833 mm
190.3 in
Height
1,443 mm
56.8 in
OpelOmega BFacelift 19995.7i V8
Power
310 hp
231 kW
0-100 km/h7.0 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
4,898 mm
192.8 in
Height
1,450 mm
57.1 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
AUDIS6 (4B/C5)4.2 V8
Power
340 hp
254 kW
0-100 km/h6.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
14.3 L/100 km
16.4 mpg US
19.8 mpg UK
OpelOmega BFacelift 19995.7i V8
Power
310 hp
231 kW
0-100 km/h7.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
14.0 L/100 km
16.8 mpg US
20.2 mpg UK

AUDI S6 (4B/C5) 4.2 V8 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
AUDIS6 (4B/C5)4.2 V8
14.3 L/100 km
16.4 mpg US
19.8 mpg UK
6.7 s
OpelOmega BFacelift 19995.7i V8
14.0 L/100 km
16.8 mpg US
20.2 mpg UK
7.0 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
AUDIS6 (4B/C5)4.2 V8
193 hp/t
144 kW/t
5.2 kg/hp
14.3 L/100 km
16.4 mpg US
19.8 mpg UK
OpelOmega BFacelift 19995.7i V8
188 hp/t
140 kW/t
5.3 kg/hp
14.0 L/100 km
16.8 mpg US
20.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIS6 (4B/C5)4.2 V8OpelOmega BFacelift 19995.7i V8
Power
340 hp
254 kW
310 hp
231 kW
Torque
420 Nm
310 lb-ft
450 Nm
332 lb-ft
Acceleration
6.7 s
7.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,760 kg
3,880 lb
1,650 kg
3,638 lb
Fuel consumption
14.3 L/100 km
16.4 mpg US
19.8 mpg UK
14.0 L/100 km
16.8 mpg US
20.2 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
434 L
15.3 cu ft
Length
4,833 mm
190.3 in
Height
1,443 mm
56.8 in
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,898 mm
192.8 in
Height
1,450 mm
57.1 in
Range score
573 km
356 mi
536 km
333 mi
CO2 score
343 g/km
-
Trunk score
434 L
15.3 cu ft
530 L
18.7 cu ft
Power-to-weight score
193 hp/t
144 kW/t
5.2 kg/hp
188 hp/t
140 kW/t
5.3 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 S6 (4B/C5) 4.2 V8Opel Omega B Facelift 1999 5.7i V8
Consumption14.3 L/100 km16.4 mpg US19.8 mpg UK14 L/100 km16.8 mpg US20.2 mpg UK
Cost / 100 km25.03 LC100 km24.50 LC100 km
Cost / 100 mi40.27 LC100 mi39.43 LC100 mi
Annual fuel used2,145 L567 US gal472 UK gal2,100 L555 US gal462 UK gal
Annual fuel cost3,754 LC/year3,675 LC/year

Head-to-head comparisons

AUDI S6 (4B/C5) 4.2 V8

  • Has 30 hp more
  • Is 0.3 s quicker from 0-100 km/h
  • Has 5 hp/t better power-to-weight
  • Has 38 km (23 mi) more estimated range

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

Opel Omega B Facelift 1999 5.7i V8

  • Has 30 Nm more
  • Is 110 kg lighter
  • Uses 0.3 L/100 km less fuel
  • Has 96 L more trunk volume

Pros

  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI S6 (4B/C5) 4.2 V8
Opel Omega B 5.7i V8
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2 vehicles selected

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AUDI S6 (4B/C5) 4.2 V8 vs Opel Omega B · Facelift 1999 5.7i V8 - car comparison - FastVsFaster