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Ferry vs driving
Put your fare, terminal miles, driving cost, miles and tolls in: ferry $47.00 vs driving $50.00 on a 50-mile trip.
★ COMPARISONS · TRAVEL · FERRY VS DRIVING
Ferry vs Driving: $47.00 Ferry vs $50.00 Driving Trip
On the defaults — a 50-mile drive at $0.70 a mile plus $15.00 of tolls, against a $40.00 ferry fare plus 10 terminal miles — driving costs $50.00 and the ferry costs $47.00, so the ferry is $3.00 cheaper, and the break-even fare is $43.00. This is the FERRY-vs-DRIVING version — one crossing, door to door — the flight-vs-driving page is the FLIGHT version — a $180.00 fare against the same driving costs; the bus-vs-driving page is the BUS version — a $4.00 fare against the same driving costs; the train-vs-driving-commute page is the TRAIN version — a $12.00 fare against the same driving costs; and the carpool-vs-driving page is the CARPOOL version — an $8.00 share against the same driving costs.
What does the ferry being $3.00 cheaper mean?
It means that on the defaults — a $40.00 fare, 10 terminal miles, $0.70 a mile, a 50-mile drive and $15.00 of tolls — the ferry wins by a whisker: driving is 50 × $0.70 plus $15.00, which is $50.00, while the ferry is $40.00 plus 10 × $0.70, which is $47.00. The terminal miles are the whole story in miniature — a ferry ticket is not a door-to-door trip, because the terminals sit away from both ends and reaching them still costs driving money, so the honest ferry figure is the fare plus the terminal miles, and the break-even fare of $43.00 is the fare at which the two sides tie exactly. The part people get wrong is comparing the fare against fuel only: fuel for 50 miles might be $7.00 or $8.00, which makes driving look far cheaper, but the all-in driving cost counts wear, servicing and depreciation too, and those are the costs that close the gap to $3.00.
Three things to check before you trust the number
Is the driving route really 50 miles? Miles are the swing input on the driving side: the 30-mile branch shows driving at $36.00, which leaves the ferry $11.00 dearer, while a longer drive moves the driving line by $0.70 a mile, so 10 miles either way moves it by $7.00. Measure the road distance for the route you would actually drive — a shorter route or a detour changes the verdict on a trip this close.
Is the fare the fare you would actually pay? The fare is the swing input on the ferry side: the $50.00-fare branch shows the ferry at $57.00, which leaves driving $7.00 cheaper, while the $30.00-fare branch shows the ferry at $37.00, which leaves the ferry $13.00 cheaper. Fares move with vehicle size, passenger count and booking time, so use the all-in fare for your crossing, not the headline fare from a search page, and if the trip is a return, double both the fare and the driving miles before comparing.
What is missing from both sides? This page compares money only, and both sides have extras: driving runs on your schedule and carries everything free, while the ferry saves wear on the car but adds waiting time, a fixed sailing schedule and, on some routes, a reservation fee. Meals on the road, parking at the terminal and any reservation fee all sit outside the two totals — add parking to the tolls line and the reservation fee to the fare if you want them counted. If you would keep the car anyway for the trip's other end, the mileage rate overstates the driving cost — only the costs you would actually avoid count toward the decision.
Worked example
On the defaults: $40.00 fare, 10 terminal miles, $0.70 a mile, 50 driving miles, $15.00 tolls.
- Driving cost: 50 × $0.70 + $15.00 is $50.00.
- Ferry cost: $40.00 + 10 × $0.70 is $47.00.
- Difference: $50.00 − $47.00 is $3.00, so the ferry is $3.00 cheaper.
- Break-even fare: $50.00 − 10 × $0.70 is $43.00 — at a $43.00 fare the two sides cost exactly the same.
And the other way: the fare behind a $47.00 ferry cost is $40.00, the driving miles behind a $50.00 driving cost are 50 miles, and the tolls behind a $50.00 driving cost are $15.00.
Every branch, checked
- $50.00 ferry fare, same terminal miles and driving costs: $50.00 ferry fare, same terminal miles and driving costs: Driving $50.00 vs ferry $57.00 — ferry $7.00 more.
- $30.00 ferry fare, same terminal miles and driving costs: $30.00 ferry fare, same terminal miles and driving costs: Driving $50.00 vs ferry $37.00 — ferry $13.00 cheaper.
- 30 driving miles, same fare, terminal miles and tolls: 30 driving miles, same fare, terminal miles and tolls: Driving $36.00 vs ferry $47.00 — ferry $11.00 more.
- No tolls, 50 driving miles: No tolls, 50 driving miles: Driving $35.00 vs ferry $47.00 — ferry $12.00 more.
- 20 terminal miles, $40.00 fare: 20 terminal miles, $40.00 fare: Driving $50.00 vs ferry $54.00 — ferry $4.00 more.
- $0.90 driving cost per mile, 50 driving miles: $0.90 driving cost per mile, 50 driving miles: Driving $60.00 vs ferry $49.00 — ferry $11.00 cheaper.
The reverses, worked backwards
- Fare behind $47.00 ferry cost: $40.00 fare — at $40.00 fare the figures are Driving $50.00 vs ferry $47.00 — ferry $3.00 cheaper.; at the lower neighbor the figures are Driving $50.00 vs ferry $42.00 — ferry $8.00 cheaper.; at the upper neighbor the figures are Driving $50.00 vs ferry $52.00 — ferry $2.00 more..
- Driving miles behind $50.00 driving cost: 50 miles — at 50 miles the figures are Driving $50.00 vs ferry $47.00 — ferry $3.00 cheaper.; at the lower neighbor the figures are Driving $43.00 vs ferry $47.00 — ferry $4.00 more.; at the upper neighbor the figures are Driving $57.00 vs ferry $47.00 — ferry $10.00 cheaper..
- Tolls behind $50.00 driving cost: $15.00 tolls — at $15.00 tolls the figures are Driving $50.00 vs ferry $47.00 — ferry $3.00 cheaper.; at the lower neighbor the figures are Driving $45.00 vs ferry $47.00 — ferry $2.00 more.; at the upper neighbor the figures are Driving $55.00 vs ferry $47.00 — ferry $8.00 cheaper..
What the defaults assume
The defaults are a $40.00 fare, 10 terminal miles, a $0.70 driving cost per mile, 50 driving miles and $15.00 of tolls, so the headline is a short crossing where the two options are close. The model is two additions on a per-trip basis: miles times rate plus tolls for driving, fare plus terminal miles times rate for the ferry, and the break-even fare is the driving cost minus the terminal driving cost. The fare reverse is checked at $5.00 either side, because the fare passes straight through to the ferry cost; the miles reverse is checked at 10 miles either side, because 10 miles at $0.70 is $7.00; the tolls reverse is checked at $5.00 either side, because tolls pass straight through to the driving cost. The model does not include time, terminal parking beyond the tolls line, reservation fees, or car costs you would pay anyway — add those to the fare or tolls lines.
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| Driving cost | driving miles × driving cost per mile + tolls | $50.00 — 50 × $0.70 + $15.00. |
| Ferry cost | ferry fare + terminal miles × driving cost per mile | $47.00 — $40.00 + 10 × $0.70. |
| Ferry saving | driving cost − ferry cost | $3.00 — $50.00 − $47.00, so the ferry is cheaper. |
| Break-even fare | driving cost − terminal miles × driving cost per mile | $43.00 — $50.00 − 10 × $0.70. |
| Fare behind a target ferry cost | target ferry cost − terminal miles × driving cost per mile | $40.00 — $47.00 − 10 × $0.70. |
| Driving miles behind a target driving cost | (target driving cost − tolls) ÷ driving cost per mile | 50 miles — ($50.00 − $15.00) ÷ $0.70. |
| Tolls behind a target driving cost | target driving cost − driving miles × driving cost per mile | $15.00 — $50.00 − 50 × $0.70. |
| $50.00 ferry fare, same terminal miles and driving costs | same model | Driving $50.00 vs ferry $57.00 — ferry $7.00 more. |
| $30.00 ferry fare, same terminal miles and driving costs | same model | Driving $50.00 vs ferry $37.00 — ferry $13.00 cheaper. |
| 30 driving miles, same fare, terminal miles and tolls | same model | Driving $36.00 vs ferry $47.00 — ferry $11.00 more. |
| No tolls, 50 driving miles | same model | Driving $35.00 vs ferry $47.00 — ferry $12.00 more. |
| 20 terminal miles, $40.00 fare | same model | Driving $50.00 vs ferry $54.00 — ferry $4.00 more. |
| $0.90 driving cost per mile, 50 driving miles | same model | Driving $60.00 vs ferry $49.00 — ferry $11.00 cheaper. |
| Fare behind $47.00 ferry cost | reverse | $40.00 fare: Driving $50.00 vs ferry $47.00 — ferry $3.00 cheaper. |
| Driving miles behind $50.00 driving cost | reverse | 50 miles: Driving $50.00 vs ferry $47.00 — ferry $3.00 cheaper. |
| Tolls behind $50.00 driving cost | reverse | $15.00 tolls: Driving $50.00 vs ferry $47.00 — ferry $3.00 cheaper. |
| 0 driving miles with $15.00 of tolls | same model | Driving $15.00 vs ferry $47.00 — ferry $32.00 more. |
| $43.00 fare — exactly even | same model | Driving $50.00 vs ferry $50.00 — exactly even. |
| $0.00 ferry fare | same model | Driving $50.00 vs ferry $7.00 — ferry $43.00 cheaper. |
| Negative ferry fare | same model | Ferry fare — $0 or more. |
Who uses this
- A traveller choosing between the ferry and driving — $50.00 driving against $47.00 by ferry on a 50-mile trip, with the $43.00 break-even fare as the decision line.
- Someone with a short drive — the 30-mile branch shows driving at $36.00, so driving wins by $11.00.
- A traveller checking a fare quote — the reverses give the fare, miles or tolls behind any quoted trip cost.
- Anyone with a long terminal drive — the 20-terminal-mile branch shows the ferry at $54.00, so driving wins by $4.00.
Accuracy & limitations
Figures are the model’s own arithmetic on the numbers you type, computed from unrounded values and displayed rounded HALF_UP to 2dp, on a per-trip basis. The main limitation is what is left out, not the arithmetic: time, terminal parking beyond the tolls line, reservation fees and car costs you would pay anyway all move the real comparison, and the $0.70 driving rate is an all-in average, not your exact car. This page is a calculation tool, not travel advice.
Cite this calculator
A 50-mile drive at $0.70 a mile plus $15.00 of tolls costs $50.00, while a $40.00 ferry fare plus 10 terminal miles costs $47.00. Source: Bright Side Kit, https://brightoolbox.com/ferry-vs-driving/, accessed 29 October 2026.
Frequently asked questions
Is the ferry always cheaper than driving?
No: on the defaults the ferry wins by $3.00, but the verdict flips with distance and fare. A 30-mile drive leaves driving $11.00 cheaper, and a $50.00 fare leaves driving $7.00 cheaper, so run your own miles and fare before deciding.
Why use $0.70 a mile instead of just fuel?
Fuel is only part of driving: the per-mile cost also counts wear, tyres, servicing and depreciation, which are real costs even though they arrive as bills rather than at the pump. Fuel alone would understate a 50-mile drive by about $28.00.
What is the break-even fare?
The fare at which the ferry costs exactly the same as driving: driving cost minus terminal driving cost, which is $50.00 minus 10 × $0.70, or $43.00. Below $43.00 the ferry is cheaper; above $43.00 driving is cheaper; at exactly $43.00 the two sides tie.
Should terminal miles count on the ferry side?
Yes: the fare alone is not a trip, because the terminals sit away from both ends and reaching them costs driving money. Leaving them out flatters the ferry by the full $7.00 on the defaults.
What if the trip is a return?
Double both sides before comparing: double the miles and tolls for driving, and double the fare and terminal miles for the ferry. Doubling only one side compares a return against a one-way trip.
What about the time each option takes?
This page compares money only. The ferry saves wear on the car but adds waiting time and a fixed sailing schedule, while driving runs on your schedule — weigh that separately against the $3.00 gap before deciding.