As a rule of thumb, the fuel consumption of Mercury outboards averages somewhere between 0.3 and 55 gph at WOT. To be more precise, the average gph figures within each class are as follows (at WOT):
- 2.5-20 HP (Portable): 0.3-2.0 gph
- 25-115 HP (Midrange): 2.3-12 gph
- 150-600 HP (High-Performance): 12-55 gph
(Note that factors such as weight, hull design, water conditions, propeller pitch, etc. may affect the consumption figures.)
But in most cases, the gph figures of a given Mercury outboard fall into the same ballpark, regardless of which type of boat the motor is pushing.
For your convenience, we at PowerSportsGuide have compiled these figures into one post!
How Much Fuel Does a Portable Mercury Outboard Use?
Based on our research, the fuel consumption of portable Mercury outboards is 0.3-2.0 gph at WOT. The average fuel economy of the different breeds in this category is as follows (at WOT):
- Mercury F2.5: 0.3-0.35 gph
- Mercury F3.5: 0.35-0.4 gph
- Mercury F5: 0.4-0.5 gph
- Mercury F8: 0.7-0.9 gph
- Mercury F9.9: 0.9-1.1 gph
- Mercury F15: 1.4-1.6 gph
- Mercury F20: 1.6-2.0 gph
How Much Fuel Does a Midrange Mercury Outboard Use?
The fuel consumption of midrange Mercury outboards averages between 2.3 and 12 gph. Some of the most popular models in this breed are as follows:
- Mercury F25: 2.3-2.5 gph
- Mercury F30: 2.5-3.0 gph
- Mercury F40: 3.5-4.0 gph
- Mercury F50: 4.5-5.0 gph
- Mercury F60: 5.0-6.0 gph
- Mercury F75: 6.0-7.5 gph
- Mercury F90: 7.0-10.0 gph
- Mercury F115: 10.5-12 gph
Let’s get down to the gritty-gritty and talk about these motors in detail!
How Much Fuel Does a 25-30 HP Mercury Outboard Use?
You can expect the fuel consumption of 25-30 HP Mercury outboards to be roughly 2.3-3.0 gph at WOT and 1.1-1.5 gph at 4000 RPM.
These motors share the same 500cc, EFI, inline-3 engine, and lower unit, except that the F25 comes with restricted engine power.
How Much Fuel Does a 40 HP Mercury Outboard Use?
Mercury F40 outboards enjoy a 4-stroke, 995cc, SOHC, 8-valve, EFI, inline-4 engine rated at 40 HP. This outboard motor burns 3.5-4.0 gph at full throttle and 1.5-2.5 gph at 4000 RPM.
Factory test results:
- Bayliner M15 + Mercury F40:
3.8 gph/7.2 mpg (at WOT-27.2 mph)
1.8 gph/8.6 mpg (at 4000 RPM – 15.5 mph)
- Crestliner 160 Sprint pontoon + Mercury F40:
3.5 gph/4.5 mpg (at WOT-15.7 mph)
2.1 gph/5.0 mpg (at 4000 RPM – 10.6 mph)
How many miles per gallon does a Mercury 40 HP outboard get?
As a rule of thumb, a Mercury F40 gets from 4-7 mpg at WOT and 5-10 mpg at 4000 RPM.
How Much Fuel Does a 50 HP Mercury Outboard Use?
50 HP Mercury outboards are the middle-sized models in the 40-60 HP breed. Just like their brothers, these motors are also powered by the 995cc, inline-4 power source.
The fuel consumption of these motors averages between 4.5 and 5.0 gph at WOT and they get 2.0-2.5 gph at 4000 RPM.
Factory test results:
- Crestliner 1600 Storm 16’ + Mercury F50:
4.4 gph/7.6 mpg (at WOT-33.5 mph)
2.5 gph/9.2 mpg (at 4000 RPM – 23.1 mph)
- Crestliner 1760 Retriever Jon Deluxe 16.8’ + Mercury F50:
4.3 gph/6.9 mpg (at WOT-29.8 mph)
2.4 gph/9.2 mpg (at 4000 RPM – 22 mph)
How many miles per gallon does a Mercury 50 HP outboard get?
A Mercury F50 gets from 4.5-7.5 mpg at WOT and 6-10 mpg at 4000 RPM.
How Much Fuel Does a 60 HP Mercury Outboard Use?
60 HP Mercury outboards are the most powerful models housing the 995cc, inline-4 engine option. These motors use anywhere from 5-6 gph at WOT and 2-3 gph at 4000 RPM.
Factory test results:
- Crestliner 180 Sprint 18.25’ pontoon + Mercury F60:
4.7 gph/7.7 mpg (at WOT-20.8 mph)
2.2 gph/6.6 mpg (at 4000 RPM – 14.5 mph)
How Much Fuel Does a 75 HP Mercury Outboard Use?
You can expect the fuel consumption of a Mercury F75 to be in the ballpark of 6-7.5 gph at WOT and 3-4 gph at 4000 RPM.
Unlike their smaller siblings, these motors house a much larger, 4-stroke, 2065cc, 4-cylinder engine rated at 75 HP.
How Much Fuel Does a 90 HP Mercury Outboard Use?
You can expect a 90 HP Mercury outboard to use 7-10 gph at WOT and 4-4.5 gph at 4000 RPM.
Factory test results:
- Barletta C20UC (21.2” pontoon) + Mercury F90:
7.1 gph/3.0 mpg (at WOT-21 mph)
4.1 gph/3.4 mpg (at 4000 RPM – 14.1 mph)
- Manitou Aurora LE Angler (20” pontoon) + Mercury F90:
7.9 gph/3.0 mpg (at WOT-23.8 mph)
4.1 gph/4.2 mpg (at 4000 RPM-17.1 mph)
- SmokerCraft 17 Excursion + Mercury F90:
8.3 gph/4.6 mpg (at WOT-38 mph)
4.0 gph/5.8 mpg (at 4000 RPM-23.3 mph)
How many mpg does a Mercury 90 outboard get?
The powerful Mercury 90 HP outboard gets anywhere from 4-6 mpg at 4000 RPM and 3-5 mpg at WOT.
How Much Fuel Does a 115 HP Mercury Outboard Use?
115 HP Mercury outboards typically burn 10-12 gph at WOT and 3.5-5 gph at 4000 RPM.
Factory test results:
- Bayliner Trophy T18 Bay + Mercury F115:
10.2 gph/3.5 mpg (at WOT-35.9 mph)
3.7 gph/5.6 mpg (at 3500 RPM – 20.4 mph)
- Crestliner 200 Sprint (20.25’ pontoon) + Mercury Pro XS115:
10.1 gph/3.1 mpg (at WOT-30.9 mph)
3.8 gph/4.9 mpg (at 4000 RPM – 18.8 mph)
- Crestliner XFC 189 + Mercury Pro XS115:
10.1 gph/4.5 mpg (at WOT-15.3 mph)
6.1 gph/4.8 mpg (at 4000 RPM-29 mph)
How many MPG does a Mercury 115 outboard get?
A 115 HP Mercury outboard on a standard boat gets 3-4.5 mpg at full throttle and 5-6 mpg at 4000 RPM.
How Much Fuel Does a High-Performance Mercury Outboard Use?
How Much Fuel Does a 150 HP Mercury Outboard Use?
Mercury 150 HP outboards are considered the smallest high-performance models in the lineup. When it comes to fuel economy, these motors can burn anywhere from 12-15 gph at WOT and 4.5-7.0 gph at 3500 RPM.
Factory test results:
- Barletta Cabrio 22CC (23.2” pontoon) + Mercury F150:
12 gph/2.7 mpg (at WOT-31.9 mph)
4.7 gph/4.0 mpg (at 3500 RPM – 18.6 mph)
- Crestliner 18 Bay + Mercury F150:
14.2 gph/3.5 mpg (at WOT-50 mph)
5.2 gph/6.1 mpg (at 3500 RPM – 31.8 mph)
- Crestliner 2050 Commander + Mercury F150:
14 gph/3.4 mpg (at WOT-46.9 mph)
5.5 gph/5.2 mpg (at 3500 RPM – 28.6 mph)
- FourWinns HD 180 + Mercury F150:
14.1 gph/3.3 mpg (at WOT-47 mph)
5.1 gph/4.9 mpg (at 3500 RPM-25 mph)
- Sea Ray SPX 190 OB + Mercury F150:
14 gph/3.3 mpg (at WOT-45.7 mph)
7.1 gph/4.7 mpg (at 4000RPM-33.2 mph)
How many miles per gallon does a Mercury 150 HP outboard get?
Simply put, a 150 HP Mercury outboard gets 4-7 mpg at 3500 RPM and 2.5-3.5 mpg at WOT.
How Much Fuel Does a 175 HP Mercury Outboard Use?
The fuel economy of 175 HP Mercury outboards falls into the ballpark of 13-17 gph at WOT and 5-8 gph at 4000 RPM.
Factory test results:
- SmokerCraft Pro Angler 182 XL + Mercury F175:
17.0 gph/2.9 mpg (at WOT-48.8 mph)
7.3 gph/4.3 mpg (at 4000 RPM-31.7 mph)
- Bayliner Trophy T20 CX + Mercury Pro XS 175:
13.3 gph/2.6 mpg (at WOT-34.1 mph)
5.6 gph/3.9 mpg (at 4000 RPM-22.2 mph)
- Avalon Catalina 2385 QL + Mercury Pro XS 175:
16.4 gph/2.4 mpg (at WOT-41 mph)
7.7 gph/3.5 mpg (at 4000 RPM-27.1 mph)
How many mpg does a Mercury 175 HP outboard get?
A 175 HP Mercury outboard gets 3-6 mpg at 3500 RPM and 2-3 mpg at WOT.
How Much Fuel Does a 200 HP Mercury Outboard Use?
You can expect the fuel consumption of a 200 HP Mercury outboard to be 16-20 gph at WOT and 6.0-9.0 gph at 4000 RPM.
Factory test results:
- Sea Ray SPX 230 OB + Mercury F200:
16.7 gph/2.6 mpg (at WOT-43.2 mph)
7.2 gph/3.9 mpg (at 4000 RPM-28.4 mph)
- Lund 1875 Tyee + Mercury Pro XS 200:
18.6 gph/2.9 mpg (at WOT-53.3 mph)
8.2 gph/4.1 mpg (at 4000 RPM-33.7 mph)
- Beneteau Antares 7 OB + Mercury F200:
19.0 gph/2.3 mpg (at WOT-43.7 mph)
7.6 gph/3.7 mpg (at 4000 RPM-28.1 mph)
How many mpg does a Mercury 200 HP outboard get?
200 HP Mercury outboard motors get 3-5 mpg at 4000 RPM and 2-3 mpg at WOT.
How Much Fuel Does a 225 HP Mercury Outboard Use?
The fuel economy of 225 HP Mercury outboards averages between 18-22 gph at WOT and 7.5-10 gph at 4000 RPM.
Factory test results:
- Quicksilver 675 Weekender + Mercury F225:
18.1 gph/2.4 mpg (at WOT-42.7 mph)
7.4 gph/3.6 mpg (at 4000 RPM-26.6 mph)
- Lund 2075 Tyee Mag + Mercury F225:
18.4 gph/2.8 mpg (at WOT-51.9 mph)
9.4 gph/3.8 mpg (at 4000 RPM-36 mph)
- Lund 1975 Pro V + Mercury Pro XS 225:
20.2 gph/2.6 mpg (at WOT-53.1 mph)
8.4 gph/4.1 mpg (at 4000 RPM-34.5 mph)
How many mpg does a Mercury 225 HP outboard get?
225 HP Mercury outboards get 3-4 mpg at 4000 RPM and 2-3 mpg at WOT.
How Much Fuel Does a 250 HP Mercury Outboard Use?
The fuel economy of Mercury 250 HP outboards falls into the ballpark of 20-25 gph at WOT and 8-11 gph at 4000 RPM.
Factory test results:
- Vanquish Boats 26CC + Mercury Verado 250:
23.4 gph/2.2 mpg (at WOT-53.6 mph)
11.1 gph/3.3 mpg (at 4000 RPM-36.5 mph)
- Nautic Star 227 XTS + Mercury F250:
23.4 gph/2.5 mpg (at WOT-58.5 mph)
9.1 gph/4.0 mpg (at 4000 RPM-36.3 mph)
- Grady White Fisherman 216 + Mercury F250:
21.2 gph/2.2 mpg (at WOT-47.5 mph)
10 gph/3.4 mpg (at 4000 RPM-34.2 mph)
- Harris Grand Mariner 250 + Mercury F250:
22.3 gph/2.0 mpg (at WOT-44.7 mph)
8.4 gph/2.4 mpg (at 4000 RPM-19.8 mph)
How many mpg does a Mercury 250 HP outboard get?
250 HP Mercury outboards get 2.5-4 mpg at 4000 RPM and 1.8-2.5 mpg at WOT.
How Much Fuel Does a 300 HP Mercury Outboard Use?
Depending on its engine features, the fuel economy of 300 HP Mercury outboards can vary greatly.
Based on our research, a standard Mercury F300 gets 22-24 gph at WOT and 9.5-11 gph at 4000 RPM. In contrast, the supercharged Verado 300 burns 22-30 gallons of gas per hour at full throttle.
Factory test results:
- Glastron GTD 240 + Mercury F300:
22.7 gph/2.2 mpg (at WOT-50.2 mph)
9.4 gph/3.4 mpg (at 4000 RPM-31.7 mph)
- Glastron GTD 240 + Mercury F300:
24.0 gph/2.1 mpg (at WOT-49.3 mph)
10.4 gph/2.9 mpg (at 4000 RPM-30.6 mph)
- Smoker Craft SLS 5 + Mercury Verado 300:
29.4 gph/1.5 mpg (at WOT-45.1 mph)
10.3 gph/2.4 mpg (at 4000 RPM – 24.3 mph)
- Beneteau Flyer 23 Sundeck + Mercury Verado 300:
24.4 gph/1.9 mpg (at WOT-45.9 mph)
9.3 gph/2.4 mpg (at 4000 RPM-22 mph)
- Barletta Corsa 25QSS 27’ Pontoon + Mercury Verado 300:
21.7 gph/2.1 mpg (at WOT-44.9 mph)
9.4 gph/2.4 mpg (at 4000 RPM-22.6 mph)
How many mpg does a Mercury 300 HP outboard get?
300 HP Mercury outboards get around 2.5-3.5 mpg at 4000 RPM and 1.5-2.2 mpg at WOT.
How Much Fuel Does a 400 HP Mercury Outboard Use?
Let’s face it, a 400 HP Mercury Verado is rarely used in a single configuration. When it is, this motor burns roughly 35-40 gph at WOT and around 9.5-12 gph at 4000 RPM.
Rigged in a twin configuration, two Verado 400s burn anywhere from 70-75 gph at full throttle and 20-22 gph at 4000 RPM.
Factory test results:
- Barletta L25UC Pontoon + Single Mercury Verado 400:
37.3 gph/1.3 mpg (at WOT-49.7 mph)
9.6 gph/2.7 mpg (at 4000 RPM-26 mph)
- Belzona 32CC + Twin Mercury Verado 400:
74.0 gph/0.7 mpg (at WOT-52.3 mph)
20.5 gph/1.2 mpg (at 4000 RPM-24.3 mph)
- Axopar 37 T-Top + Twin Mercury Verado 400:
73.5 gph/0.8 mpg (at WOT-59.5 mph)
21.3 gph/1.6 mpg (at 4000 RPM-34.3 mph)
How many mpg does a Mercury Verado 400 get?
A single Mercury Verado 400 outboard gets 2-3 mpg at 4000 RPM and 1-2 mpg at WOT, while a twin configuration gets 1-1.5 mpg at 4000 RPM and 0.6-0.9 mpg at WOT.
How Much Fuel Does a 600 HP Mercury Outboard Use?
A single Mercury Verado 600 burns 45-55 gph at WOT and 17-23 gph at 4000 RPM. When used in a twin configuration, the two motors can use anywhere from 90-100 gph at full throttle and 35-45 gph at 4000 RPM.
Factory test results:
- Bennington 28QXFBWAX1 + Single Mercury Verado 600:
47.8 gph/1.2 mpg (at WOT-55.6 mph)
17.6 gph/1.9 mpg (at 4000 RPM-33 mph)
- Boston Whaler 380 Outrage + Twin Mercury Verado 600:
98.7 gph/0.6 mpg (at WOT-55.6 mph)
38.1 gph/0.9 mpg (at 4000 RPM-33 mph)
- Cruiser Yachts 42 GLS + Twin Mercury Verado 600:
100.1 gph/0.5 mpg (at WOT-49.3 mph)
41.6 gph/0.7 mpg (at 4000 RPM-29.3 mph)
- Formula 380 + Twin Mercury Verado 600:
96.5 gph/0.6 mpg (at WOT-49.3 mph)
42.6 gph/0.8 mpg (at 4000 RPM-34.7 mph)
How many mpg does a Mercury Verado 600 get?
A single Mercury Verado 600 gets approximately 1.5-2.5 mpg at 4000 RPM and 1-1.5 mpg at WOT, while a twin configuration gets 0.7-1.0 mpg at 4000 RPM and 0.5-0.6 mpg at WOT.
Takeaways – Mercury Outboard Fuel Consumption Chart
As a takeaway, we’ve compiled the average fuel consumption figures of the most popular Mercury outboards into one chart:
Mercury Outboard GPH Chart
| HP | GPH at WOT | GPH at 4000 RPM |
| 2.5 HP | 0.3-0.35 GPH | na. |
| 3.5 HP | 0.35-0.4 GPH | na. |
| 5 HP | 0.4-0.50 GPH | na. |
| 8 HP | 0.75-0.85 GPH | na. |
| 9.9 HP | 0.9-1.1 GPH | na. |
| 15 HP | 1.4-1.6 GPH | na. |
| 20 HP | 1.6-2.0 GPH | na. |
| 25 HP | 2.3-2.5 GPH | 1.1-1.3 GPH |
| 30 HP | 2.5-3.0 GPH | 1.3-1.5 GPH |
| 40 HP | 3.5-4.0 GPH | 1.5-2.0 GPH |
| 50 HP | 4.5-5.0 GPH | 2.0-2.5 GPH |
| 60 HP | 5.0-6.0 GPH | 2.5-3.0 GPH |
| 75 HP | 6.0-7.5 GPH | 3.0-4.0 GPH |
| 90 HP | 7.0-10.0 GPH | 3.3-4.5 GPH |
| 115 HP | 10-12 GPH | 3.5-5.0 GPH |
| 150 HP | 12-15 GPH | 4.5-7.0 GPH |
| 175 HP | 13-17 GPH | 5.0-8.0 GPH |
| 200 HP | 16-20 GPH | 6.0-9.0 GPH |
| 225 HP | 18-22 GPH | 7.5-10 GPH |
| 250 HP | 20-25 GPH | 8.0-11.0 GPH |
| 300 HP | 22-30 GPH | 9.0-11.5 GPH |
| 400 HP | 35-40 GPH | 9.5-12.0 GPH |
| 600 HP | 45-55 GPH | 15.0-23.0 GPH |
Disclaimer: This chart is for informational purposes only! Factors such as weight, hull design, water conditions, propeller pitch, etc. may affect the consumption figures.
Sources:
performancedata.mercurymarine.com
