Showing posts with label Costs. Show all posts
Showing posts with label Costs. Show all posts

Friday, 13 April 2018

Cost Comparison of new vehicles

Source: https://www.popularmechanics.com/cars/g1792/12-new-cars-that-are-worth-waiting-for/
I have spent the last few days pricing out the differences in costs between the various hybrids, Plug-in Hybrid Electric Vehicles (PHEV) and Electric Vehicles (EV).

Currently, there are A LOT of options to choose from if you are interested in one of these three classes of cars, with many more set to hit the market later 2018, another round in 2019 and most producers offering full electric line-ups come 2020.

If you are willing or able to wait to buy, my belief is that through increased competition and technological advancements, over the next 2 years, we will see drastic decreases in the cost of these vehicles while simultaneously witnessing increases in electric range and capabilities.

But what exists now? Well based on a current level of driving and costs being faced I worked out the annual, 5-year and 10-year costs of ownership for each car on the market.

This is a limited study, however as it only focuses on new (2018) Vehicles because the data on these vehicles is easiest to obtain. furthermore, it does not include maintenance costs because I could not determine a reliable estimate of the new vehicle types (PHEV and EV). I would expect however that if you include maintenance costs, it would push up the price of Hybrid, and PHEV placing EVs at the lower cost spectrum in the long-run.

Without further adieu, The assumptions followed by the graphs.
Assumptions:
  1. Gas is currently $1.459. over the last year, gas prices have increased by 12%. This seems aggressive to continue into the future, so I assume that gas prices will grow at an average rate of 8% a year. 
  2. Electricity in BC is on a stepped system, I took an average cost of $0.09/Kwh while over the last year, electricity prices have decreased, I don't see this as a long-run trend so I make the assumption that electricity costs would increase at inflation, thus on average 2% a year. 
  3. Car loans are at 5%, with any such loan being amortized over 5 years. 
  4. The discount rate is 5%. That is $100 next year is only worth $95.24 today. 
  5. Driving a total of 80km a day, 4 times a week (This is high for most I realize). 
Onto the graphs showing the cost by vehicle. First the cost of ownership over the first year followed by the a 5 year aggregate and 10 year aggregate cost. 
First up the annual cost of ownership. 
  • Annual loan (blue) is the value of all loan payments in the first year.
  • Annual gas - this guy gets a little complicated. 
    • If the vehicle is PHEV and the one-way commute is less than the range then technically no gas has been used. However to include "one-off" long trips I have still included a fuel usage at 10% of total km driven. 
    • Otherwise, the gas usage is straight gas usage based off of average L/100km. 
  • Annual Electricity - How many Km driven versus the range of the vehicle providing the # of full charges required in a year. The Kwh required to charge multiplied by the cost yielding the electricity cost. 
At the 1 year horizon. 4 out of the 5 cheapest cars are hybrids, with one PHEV (Hyundai Ioniq EV+) making the list.

Moving out to the 5 year mark. at this point we are incorporating inflation of gas, electricity, as well as my discount rate (Future payments are not worth as much to me as present payments). As expected over this time period, the pricier cars which don't depend on gas begin to migrate to the cheaper side.

On the 5 year horizon, the top two remain constant, however, in the top 5 now only 3 are hybrids, one PHEV and one EV (Hyundai Ioniq dominates here).

Finally the ten year horizon, over this horizon the cost of gas begins to outweigh the larger purchase prices and the EV's overall begin to win out ... If you keep them, and they are not obsolete in 10 years...

Now the top 5 are made up of 3 EVs, one PHEV, and one Hybrid. over this time horizon, the cheapest vehicles are the 3 versions of the Hyundai Ioniq (EV, PHEV and Hybrid) as well as the Kia Soul and Nissan Leaf.

So if you are considering buying a vehicle, and view each vehicle as having very little differentiation, then the clear winner is the Hyundai Ioniq series of cars.

If you have a degree of preference of one model or brand over another, then you can begin to weigh your options between price and preference.

For this, I would really focus on the 5 year time horizon. Over the ten year horizon I feel that there will be so much technological change over the next ten years that the majority of vehicles bought today will be nearly obsolete in relation to the range and capabilities of the vehicles ten years from now.

This is all my 2 cents at least.

What are your thoughts? what do you think about all the new EV, PHEV cars hitting the market? Feel free to comment below.

Thursday, 25 January 2018

Cost of red lights on Vancouver Island


I, like many residents of Victoria, frequently make the trip up island to visit the rugged beauty and outdoors of the north island. Like many, I find my self increasingly frustrated with the traffic lights on a highway.

For those not familiar with Vancouver Island. there is one main artery, highway, running from Victoria, north to Nanaimo. At Nanaimo, this highway (Hwy 1) enters the city to the ferry terminal before continuing across the strait in Vancouver. For those of us who want to continue further north than Nanaimo we more or less stay on the same highway, although it changes names to be Hwy 19.

Although this is a highway, stretching approximately 130 km from the CRD to Parksville and is the main route to travel North/South along the island, it is littered with traffic lights continually stopping traffic and creating congestion along the route.

Finally, in a recent trip, I watched to my horror as I was stopped an astounding 23 times during this stretch for a red light - I figured (as many people say) that I hit every single red light along the route.

Well, in fact, I did not, there are 42 traffic lights along the route between the Goldstream turn off (start of true Hwy at the edge of the city) and the Parksville turn off (where oddly enough, fewer people drive but they have done away with lights in favour of overpasses...). That is I was only stopped by about 50% of the lights.

Regardless this had me thinking about the social cost of these traffic lights due to idling and additional fuel usage through acceleration.

The first thing to determine was the average idling cost. Now there are many different types of vehicle on the road, so utilizing information from Natural Resources Canada to determine the % of vehicle by class (here) - as well as idling information from the US (here) I attempted to link idling information up to vehicle class and determine a weighted average of fuel used while idling. this worked out to a low 0.01884 L/minute. or 0.000314 L/Second

With a loose estimate of idling usage, at a cost of gas currently at $1.36/L this works out to a cost of:

$0.0256/minute or $0.000427/second ... does not seem too horrendous.

Next task then was to determine how much fuel is used every time we need to accelerate back up to speed. Casually googling this information yielded that acceleration can increase fuel consumption by 10-30% ... to pick the middle path, I chose to utilize an increase of 20%.

If acceleration causes an increase in fuel usage by 20%, I needed to figure out what base fuel usage is. utilizing the above date I worked out that the average fuel usage could be expected to be around 11.34 L/100km (remember we have everything from small sub-compacts to Semi trucks driving the road). this yields us an average cost of $15.42/100km

Assuming this 20% increase in fuel usage, and further assuming that it takes us a full Km to get back up to highway speeds from a full stop, this gives us a cost of accelerating at $0.1851 each time we have to stop.

So we have our cost of idling, we have our cost of accelerating. anecdotally I find that on average if I am stopped, I am stopped for at least 20 seconds. extrapolating our previously calculated amounts, this gives me an average cost per redlight of $0.19364 - Just under $0.20 each time we have to stop.

At this point, the whole task seems rather trivial. Even if I was stopped at every red light (42) that would only be an extra fuel cost to me of $8.13.

So turning to the ministry of transportation I collected their traffic volume data for this highway over the stretch of interest (here). I found that on average 26,728.39 vehicles are traveling this stretch on any given day. Now things begin to add up ... but clearly, they are not all stopped at all red lights!

Suppose that a driver has a 20% chance of being stopped by any given traffic light, we can use a binomial distribution to determine how many times these 26,728.39 cars are stopped over their travels.


We find based off this that on an average trip we will be stopped at 10.53 lights (which seems about right from my experience). Further - my event of being stopped 23 times does not even register as a likely outcome!

From this distribution, though we determine that on average on any given day vehicles on whole stop 281,478 times between over this distance.

That is, at an average cost of $0.19 per stop, we have a daily fuel cost of $55,102.04 ... no longer a trivial amount! Extrapolating this out for a full year (365 days) and we have an annual fuel cost resulting from these traffic lights as $20,111,244.60 - that is $20.11 Million dollars a year at present fuel prices.

Add on to this environmental impacts (from burning all this extra fuel) as well as extra transportation time for shipping companies etc. and these red lights turn out to be quite an expensive toll on society!

What are your thoughts on these traffic lights? feel free to comment below.

Update May 2018: the Gas price has increased from $1.36 to $1.55 due to this spike in gas prices - estimated annual cost due to traffic lights has increased to $22,922,044.


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