BMW 3-Series BMW 3-Series 2018 Mercedes-Benz SLK Mercedes-Benz SLK 2015

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BMW 3-Series vs. Mercedes-Benz SLK 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.

BMW 3-Series vs. Mercedes-Benz SLK Invoice Comparison

Lowest Total Price: $74,045

BMW 3-Series M3   
Difference: $3,210

Lowest Total Invoice: $69,535

BMW 3-Series M3   
Difference: $2,378

Calculate Payments

  Down Payment Interest Rate Term
Model Year20182015
Model3-SeriesSLK
TrimM3SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Base Price $65,500 $70,900
Base Invoice $61,595 $65,937
7-speed automated manual 2,900  
Executive Package 4,100  
Metallic paint (extra cost) 550 720
Leather seating surfaces 0  
Aluminum trim 0  
Sunroof 0  
Multimedia Package   2,330
Automatic climate control, front   760
Obstacle detection, rear   970
Proximity key   650
7-speed automated manual 2,670  
Executive Package 3,770  
Metallic paint (extra cost) 505 670
Leather seating surfaces 0  
Aluminum trim 0  
Sunroof 0  
Multimedia Package   2,167
Automatic climate control, front   707
Obstacle detection, rear   902
Proximity key   605
Options (change) 7,550 5,430
Options (change) 6,945 5,051
Destination 995 925
Total Price $74,045 $77,255
Total Invoice $69,535 $71,913

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

Dealer Price Quotes

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Request free, no-obligation BMW 3-Series dealer quotes or Mercedes-Benz SLK 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: BMW 3-Series vs. Mercedes-Benz SLK

Lowest Adjusted Price: BMW 3-Series M3
Lowest Adjusted Invoice: Mercedes-Benz SLK SLK55 AMG
TrueDelta Adjusted Price Difference: $265
TrueDelta Adjusted Invoice Difference: $363
Model Year20182015
Model3-SeriesSLK
TrimM3SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Engine425hp I6415hp V8
TransmissionS7T7
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)17/24 MPG19/28 MPG
Audio (watts, speakers)600, 16500, 11
Tire (rear if not all the same)255/40-18235/40-18
Total Price$74,045$77,255
Adjustments for Features0-2,945
Feature-Adjusted Total Price$74,045$74,310
Total Invoice$69,535$71,913
Adjustments for Features0-2,741
Feature-Adjusted Total Invoice$69,535$69,172

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Features Comparison: BMW 3-Series vs. Mercedes-Benz SLK

Model Year20182015
Model3-SeriesSLK
TrimM3SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Transmission and Drivetrain 
7-speed automated manual$1200 
7-speed manually-shiftable automatic $1200
RWD$0$0
Accessories 
Hands-free trunk or liftgate$100 
Heated steering wheel$100 
Parking guidance system - passive $250
Power rear side windows$200 
Semi-automated parking system$500 
Tilt/telescoping steering wheel, manual$250 
Tilt/telescoping steering wheel, power $350
Brakes, Airbags, and Other Safety 
Around view cameras$500 
Driver drowsiness monitor $150
Roll bar $200
Temporary spare tire $150
Torque vectoring, brake-based $100
Wide-view front camera$150 
Cargo Management 
Air-conditioned storage compartment$50 
Climate Control 
Automatic air recirculation$100 
Rear air vents with manual controls$150 
Drivetrain 
Active rear differential$500 
Engine / Motor 
Dual-mode exhaust, switchable $500
Regenerative braking$0 
Exterior 
Black exterior trim (optional)$0 
Body kit $0
Glass roof panel(s) $300
Painted brake calipers (optional)$0 
Power retractable hardtop $6750
Sport rocker panels (optional)$0 
Sunroof$900 
Infotainment 
4G LTE connectivity$0 
Handwriting recognition$200 
S Voice support$0 
Satellite radio $200
Satellite radio - one year subscription$250 
SD Card slot $25
Siri Eyes Free support$0 
SMS text-to-speech reader $25
Telematics service, such as OnStar$200 
Telematics service, such as OnStar, with navigation $225
Voice control for external devices$0 
Instruments, Lights, and Mirrors 
Analog clock $25
Fog light, rear $100
Head-up display (HUD)$350 
Illuminated visor mirror, driver$50 
Illuminated visor mirror, passenger$50 
LED headlights$1000 
Visor mirror, driver $10
Visor mirror, passenger $10
Xenon HID headlights $500
Seats and Interior Trim 
Center armrest(s), second row$50 
Folding second row seats$300 
Heated second row seats$200 
Leather door panel trim $250
Manual thigh support length adjuster, driver seat$50 
Manual thigh support length adjuster, passenger seat$50 
Memory system, passenger seat $150
Metal pedals $75
Neck-level heating, front seats $150
No leather in second row $-300
Power seatback bolsters, driver seat$100 
Power seatback bolsters, passenger seat$100 
Synthetic suede inserts in leather seating surfaces $0
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500 
Electronic systems calibration selector$200 
Performance steering system (optional)$0 
Transmission 
Launch control$100 
Total Value of Features$8,450$11,395
Value of Feature Adjustments$0$2,945
Value of Feature Adjustments0-2,741

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Specifications Comparison: BMW 3-Series vs. Mercedes-Benz SLK

Model Year20182015
Model3-SeriesSLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase110.6 in95.7 in
Length182.5 in162.8 in
Width71.3 in71.5 in
Height56.3 in51.2 in
Curb Weight3,630 lb.3,583 lb.
Fuel Capacity15.8 gal.15.9 gal.
Row 1 Headroom40.3 in38.0 in
Row 1 Shoulder Room55.1 in52.2 in
Row 1 Legroom42.0 in42.5 in
Row 2 Headroom37.7 in0.0 in
Row 2 Shoulder Room55.1 in0.0 in
Row 2 Legroom35.1 in0.0 in
Cargo Volume,
Minimum
13.0 ft36.4 ft3
Cargo Volume,
Maximum
13.010.1 ft3

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Option Package Details
BMW 3-Series M3

Executive Package
FeatureValueRequested?
Heated second row seats200No
Obstacle detection, front150Yes
Obstacle detection, rear250Yes
Heated steering wheel100No
Head-up display (HUD)350No
Headlight washers50Yes
Steering-linked headlights150Yes
Auto-dimming headlights200Yes
Semi-automated parking system500No
Around view cameras300No
Wide-view front camera150No
Total Requested80033%
Total Not Requested160067%

Option Package Details
Mercedes-Benz SLK SLK55 AMG

Automatic climate control, front
FeatureValueRequested?
Automatic climate control, front200Yes
Dual-zone climate control125Yes
Total Requested325100%
Total Not Requested00%
Obstacle detection, rear
FeatureValueRequested?
Obstacle detection, rear250Yes
Obstacle detection, front150Yes
Parking guidance system - passive250Yes
Total Requested650100%
Total Not Requested00%
Multimedia Package
FeatureValueRequested?
DVD-compatible player0Yes
Media drive15Yes
Traffic + travel information25Yes
SD Card slot25No
In-vehicle Internet150Yes
App support0Yes
Navigation map updates, three years0Yes
Navigation system600Yes
Voice control for nav and audio100Yes
Total Requested89097%
Total Not Requested253%

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