Mercedes-Benz GLS Mercedes-Benz GLS 2018 Audi A6 / S6 Audi A6 / S6 2014

We are 103,000+ car owners sharing real-world car information.

Join Us

Mercedes-Benz GLS vs. Audi A6 / S6 Price Comparison (MSRP)

The sticker prices, before adjusting for remaining feature differences. Usually these are the numbers you will see on the window stickers.

Models in short supply often sell at or even above these prices.

Mercedes-Benz GLS vs. Audi A6 / S6 Invoice Comparison

Lowest Total Price: $85,745

Audi A6 / S6 S6 4.0 TFSI   
Difference: $40,710

Lowest Total Invoice: $79,810

Audi A6 / S6 S6 4.0 TFSI   
Difference: $37,863

Calculate Payments

  Down Payment Interest Rate Term
Model Year20182014
ModelGLSA6 / S6
TrimAMG GLS63S6 4.0 TFSI
Body4dr SUV4dr Sedan
Base Price $125,300 $73,400
Base Invoice $116,529 $68,262
Wood trim, alternative type 160 900
Cold Weather Package   500
Comfort Seating Package   2,000
Driver Assistance Package   2,800
Metallic paint (extra cost)   500
Rear side airbags   350
LED headlights   1,400
Synthetic suede headliner   3,000
Wood trim, alternative type 149 838
Cold Weather Package   467
Comfort Seating Package   1,860
Driver Assistance Package   2,604
Metallic paint (extra cost)   467
Rear side airbags   325
LED headlights   1,302
Synthetic suede headliner   2,790
Options (change) 160 11,450
Options (change) 149 10,653
Destination 995 895
Total Price $126,455 $85,745
Total Invoice $117,673 $79,810

Return to top

While we strive for accuracy, the site is not error-free, and prices can change at any time.

Dealer Price Quotes

Want to find out how much dealers are willing to discount these cars?

Request free, no-obligation Mercedes-Benz GLS dealer quotes or Audi A6 / S6 dealer quotes from dealers using our car quote form.

The process is easy and takes just a minute or two. You'll receive price quotes from local approved dealers within 48 hours.

TrueDelta Value Comparison: Mercedes-Benz GLS vs. Audi A6 / S6

Lowest Adjusted Price and Invoice: Audi A6 / S6 S6 4.0 TFSI
TrueDelta Adjusted Price Difference: $34,105
TrueDelta Adjusted Invoice Difference: $31,717
Model Year20182014
ModelGLSA6 / S6
TrimAMG GLS63S6 4.0 TFSI
Body4dr SUV4dr Sedan
Engine550hp V8420hp V8
TransmissionT7S7
DrivetrainAWDAWD
EPA Fuel Economy (city/highway)13/17 MPG17/27 MPG
Audio (watts, speakers)830, 14630, 14
Tire (rear if not all the same)295/40-21255/40-19
Total Price$126,455$85,745
Adjustments for Features-6,6050
Feature-Adjusted Total Price$119,850$85,745
Total Invoice$117,673$79,810
Adjustments for Features-6,1460
Feature-Adjusted Total Invoice$111,527$79,810

Return to top

Features Comparison: Mercedes-Benz GLS vs. Audi A6 / S6

Model Year20182014
ModelGLSA6 / S6
TrimAMG GLS63S6 4.0 TFSI
Body4dr SUV4dr Sedan
Transmission and Drivetrain 
7-speed manually-shiftable automatic$1200 
7-speed automated manual $1200
AWD$1700$1700
Accessories 
AC power outlet$100 
Heated / cooled cup holders, front row$75 
Heated steering wheel $100
Power door closers$300 
Power flip-out rear side windows$125 
Power liftgate$350 
Remote app$25 
Remote climate control$25 
Remote start via app$75 
Remote window/roof operation$15 
Semi-automated parking system$500 
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0 
Automatic braking, high-speed or partial$200 
Blind spot collision prevention$150 
Collision preparation system, rear $100
Driver drowsiness monitor$150 
Hill descent control$250 
Knee airbag, passenger $75
Side curtain airbags $350
Side curtain airbags, three rows$500 
Trailer sway control$25 
Wide-view front camera $150
Wide-view rear camera $0
Cargo Management 
Aluminum roof rails$250 
Cargo cover$75 
Console with shifter $150
Console without shifter$150 
Rear seat pass-through $100
Climate Control 
Rear dual-zone climate control $125
Rear HVAC unit$400 
Rear wiper$175 
Residual heat $50
Drivetrain 
Active rear differential $500
Engine / Motor 
Automatic start / stop$150 
Dual-mode exhaust, switchable $500
Regenerative braking $0
Exterior 
Body kit $0
Deep-tinted rear windows$275 
Glass roof panel(s)$300 
Laminated front side windows$200 
Panoramic sunroof$1200 
Rear bumper protector$40 
Rear spoiler$200 
Running boards$350 
Sunroof $900
Wheel-lip moldings$75 
Infotainment 
Android Auto support$100 
App support$0 
Apple CarPlay support$100 
Aux input $50
Handwriting recognition $200
iPod integration $100
Navigation map updates, three years$0 
SD Card slot$25 
SMS text-to-speech reader$25 
Telematics service, such as OnStar, with navigation$225 
USB port$25 
Instruments, Lights, and Mirrors 
Adaptive headlights$200 
Analog clock$25 
Auto-dimming headlights$200 
Auto-dimming passenger-side mirror $75
Cornering lights $50
Interior ambient lighting $150
Interior ambient lighting, configurable$150 
Steering-linked headlights $150
Seats and Interior Trim 
Leather seating surfaces, third-row seats$200 
Manual recliner, second row seats$75 
Metal pedals $75
Power headrest height adjuster, driver seat$50 
Power headrest height adjuster, passenger seat$50 
Power release, second row seats$50 
Power thigh bolsters, driver seat $100
Power thigh bolsters, passenger seat $100
Power-folding third row seats$1000 
Upholstered instrument panel, leather$1000 
Suspension, Wheels, and Tires 
Active stabilizer bars$500 
Crosswind stabilization$50 
Total Value of Features$13,655$7,050
Value of Feature Adjustments$6,605$0
Value of Feature Adjustments-6,1460

Return to top

Specifications Comparison: Mercedes-Benz GLS vs. Audi A6 / S6

Model Year20182014
ModelGLSA6 / S6
Body4dr SUV4dr Sedan
Wheelbase121.1 in114.7 in
Length202.0 in193.9 in
Width76.1 in73.8 in
Height72.8 in57.8 in
Curb Weight5,754 lb.4,398 lb.
Fuel Capacity26.4 gal.19.8 gal.
Row 1 Headroom41.2 in37.2 in
Row 1 Shoulder Room58.5 in57.5 in
Row 1 Legroom40.3 in41.3 in
Row 2 Headroom40.0 in37.8 in
Row 2 Shoulder Room58.3 in56.3 in
Row 2 Legroom38.5 in37.4 in
Row 3 Headroom38.9 in0.0 in
Row 3 Shoulder Room50.5 in0.0 in
Row 3 Legroom35.0 in0.0 in
Cargo Volume,
Minimum
16.0 ft314.1 ft3
Cargo Volume,
Behind R2
49.4 ft314.1 ft3
Cargo Volume,
Maximum
93.8 ft314.1 ft3

Return to top

Option Package Details
Audi A6 / S6 S6 4.0 TFSI

Synthetic suede headliner
FeatureValueRequested?
Synthetic suede headliner650Yes
Dark-colored headliner (optional)0No
Total Requested650100%
Total Not Requested00%
Cold Weather Package
FeatureValueRequested?
Heated second row seats200Yes
Heated steering wheel100No
Total Requested20067%
Total Not Requested10033%
Comfort Seating Package
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Power thigh support adjuster, driver seat100Yes
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver100Yes
Power thigh support adjuster, passenger seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Memory system, passenger seat150Yes
Massage, driver seat100Yes
Massage, passenger seat100Yes
Total Requested105084%
Total Not Requested20016%
Driver Assistance Package
FeatureValueRequested?
Radar- or camera-based collision preparation system0Yes
Lane departure warning system200Yes
Adaptive cruise control, all-speed700Yes
Lane departure prevention system150Yes
Around view cameras300Yes
Automatic braking, low-speed200Yes
Forward collision alert200Yes
Wide-view front camera150No
Wide-view rear camera0No
Total Requested175092%
Total Not Requested1508%

Was this information useful?

We're glad we could help! Share this page:

We're so sorry! Tell us how we can improve it.

See TrueDelta's information for all SUVs
See TrueDelta's information for all Mercedes-Benz models.