BMW F 850 GS Adventure vs Harley-Davidson Fat Boy

Last Updated: November 14, 2026

BMW F 850 GS Adventure price starts at Rs. 13.75 Lakh, which is Rs. 14.28 Lakh cheaper than the base variant of Harley-Davidson Fat Boy, priced at Rs. 28.03 Lakh. In terms of mileage, the F 850 GS Adventure offers a claimed 24 kmpl, while the Fat Boy delivers 18.18 kmpl. On the performance front, the F 850 GS Adventure uses a 853cc engine producing 95.17 PS @ 8250 rpm and the Fat Boy a 1923cc engine producing 104.69 PS @ 5020 rpm. If you're deciding between the F 850 GS Adventure and Fat Boy, the F 850 GS Adventure is the better pick for affordability and mileage, while the Fat Boy stands out for performance.

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F 850 GS Adventure vs Fat Boy Comparison Summary

Specification BMW F 850 GS AdventureHarley-Davidson Fat Boy
Ex-showroom price (base) Rs. 13.75 LakhRs. 28.03 Lakh
Mileage 24 kmpl18.18 kmpl
Engine 853 cc1923 cc
Max power 95.17 PS @ 8250 rpm104.69 PS @ 5020 rpm
Top speed 197 kmphNot Available
Kerb weight 248 Kg315 Kg

F 850 GS Adventure vs Fat Boy Key Highlights

Basic Info BMW F 850 GS Adventure ProHarley-Davidson Fat Boy STD
Rating
1 review
2 reviews
Brand Name BMW Harley-Davidson
Ex-Showroom Price Rs. 13.75 Lakh Rs. 28.03 Lakh Check On Road Price
Engine Type Water-cooled 4-Stroke In-line Two-cylinder Engine, Four Valves Per Cylinder, Two Overhead Camshafts, Dry Sump Lubrication Milwaukee-Eight™ 117 Custom
Max Power 95.17 PS @ 8250 rpm 104.69 PS @ 5020 rpm
Fuel Type Petrol Petrol
Colors
Harley Davidson Fat Boy Colors
Wheel Size Front :-533.4 mm,Rear :-431.8 mm Front :-457.2 mm,Rear :-457.2 mm
Wheels Type (Pressed Steel/ Alloy) Spoke Cast Aluminum
ABS Dual Channel Dual Channel
Starting Self Start Only Self Start Only
Speedometer Digital Analogue
EMI Not Available
Rs. 76,745 @ 6% (36 months)
Insurance Not Available Rs. 58,686 Fat Boy Insurance
Brochure N/A N/A

Valves (per cylinder)
Not Available
4
Claimed Top Speed
Not Available
177 kmph
Emission Norm Compliance
Not Available
bs6.2
Engine Type
Water-cooled 4-Stroke In-line Two-cylinder Engine, Four Valves Per Cylinder, Two Overhead Camshafts, Dry Sump Lubrication
Milwaukee-Eight™ 117 Custom
Engine Displacement
853 cc
1923 cc
Gear Box
Not Available
6 Speed
Max Power
95.17 PS @ 8250 rpm
104.69 PS @ 5020 rpm
Max Torque
92 Nm @ 6250 rpm
168 Nm @ 3000 rpm
Emission Type
bs6-2.0
Not Available
Bore
Not Available
103.5 mm
Stroke
Not Available
114.3 mm
Number Of Cylinders
2
2
Drive Type
Chain Drive
Chain Drive
Valve Per Cylinder
4
Not Available
Fuel System
Not Available
Fuel Injection
Fuel Type
Petrol
Petrol
Compression Ratio
Not Available
10.3:1

Front Brake
Not Available
Disc
Rear Brake
Not Available
Disc
Front Caliper
Not Available
4 Piston
Rear Caliper
Not Available
4 Piston

Mileage (Overall)
24 kmpl
18.18 kmpl
Top Speed
197 kmph
Not Available
Fuel Reserve
3.5 L
Not Available
Fuel Gauge
Not Available
Digital

Suspension-Front
Not Available
Dual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers
Suspension-Rear
Not Available
Hidden, free piston, coil-over monoshock; 43mm stroke; hydraulic preload adjustment

Tyre Size
Front :-90/90-21, Rear :-150/70-17
Front :-160/60-R18, Rear :-240/40-R18
Peak Power
95.17 PS @ 8250 rpm
Not Available
Wheel Size
Front :-533.4 mm,Rear :-431.8 mm
Front :-457.2 mm,Rear :-457.2 mm
Tyre Make
Not Available
Michelin
Tyre Type
Tubeless
Tubeless
Radial Tyre
Yes
Yes
Wheels Type (Pressed Steel/ Alloy)
Spoke
Cast Aluminum

Dry Weight
Not Available
304 kg
Seat height
875 mm
675 mm
Engine Oil Capacity
Not Available
4.7 L
Wheelbase
Not Available
1650 mm
Length
Not Available
2365 mm
Ground Clearance
Not Available
125 mm
Width
Not Available
965 mm
Fuel Tank Capacity
23 Liters
18.9 L
Kerb Weight
248 Kg
315 Kg
Tail Light
LED
LED
Saddle Height
875 mm
Not Available

Additional Features
ABS Pro, Revolution Counter, On-board Computer, Dynamic ESA
Not Available
USB charging port
Yes
Yes
Headlight
LED
LED
Turn Signal Lamp
LED
Not Available

Cruise Control
Yes
Yes
Frame Type
Bridge-Type Frame, Steel Shell Construction
Stiffer Frame
Trip Meter
Not Available
Digital
Riding Modes
Not Available
Yes
Traction Control
Not Available
Yes
Kill Switch
Not Available
Yes
Low battery alert
Not Available
Yes
Rear Footpegs
Not Available
Yes
Additional Features/Information
Not Available
Drag-Torque Slip Control System, Hand Controls, Tyre Pressure Monitoring System, Cornering Enhanced Anti-lock Brake System, Cornering Enhanced Traction Control System, Cornering Drag-Torque Slip Control System
Gear Position Indicator
Not Available
Yes
ABS Type
Not Available
Dual Channel
Side Stand Warning
Not Available
Yes
ABS
Dual Channel
Dual Channel
Body Type
Adventure Tourer Bikes
Cruiser Bikes
Instrument Console Type
Digital
Analogue and Digital
Starting
Self Start Only
Self Start Only
Seat Type
Single
Split
Pass Beam Switch
Yes
Yes
Speedometer
Digital
Analogue
Tachometer
Digital
Digital
Tripmeter
Digital
Not Available
Low Fuel Warning Lamp
Yes
Yes
Techometer
Digital
Not Available
Clock
Digital
Yes
Low Battery Indicator
Not Available
Yes
Low Oil Indicator
Not Available
Yes
Passenger Footrest
Yes
Not Available
Cooling System
Liquid Cooled
Air Cooled
Odometer
Digital
Digital
Navigation
Yes
Not Available
Switchable ABS
Not Available
Yes

Air Filter Service Cost
No
Not Available
Spark Plug Service Cost
No
Not Available

Standard Warranty (Years)
3
Not Available
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Latest News on BMW F 850 GS Adventure and Harley Davidson Fat Boy

BMW F 850 GS Adventure Vs Harley-Davidson Fat Boy FAQs

Which bike is best between BMW F 850 GS Adventure vs Harley-Davidson Fat Boy?
On the basis of mileage, performance, comfort, maintenance and features user have rated both the bikes equally.
Which bike is cheaper BMW F 850 GS Adventure vs Harley-Davidson Fat Boy?
The BMW F 850 GS Adventure is cheaper than Harley-Davidson Fat Boy by ₹14.28 Lakh.
Which bike offers better performance BMW F 850 GS Adventure vs Harley-Davidson Fat Boy?
For the Pro version, 853 cc Petrol engine of F 850 GS Adventure produces 95.17 PS @ 8250 rpm of power and 92 Nm @ 6250 rpm of torque. Whereas for the STD version, 1923 cc Petrol engine of Fat Boy produces 104.69 PS @ 5020 rpm of power and 168 Nm @ 3000 rpm of torque
As per the users experiences in terms of performance both are same.

Images of Harley-Davidson Fat Boy and BMW F 850 GS Adventure

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