I can’t significantly recall how often I heard a comparable sentence back in the days when I would accelerate my auto feeling that even Vin Diesel couldn’t beat me on the off chance that he was in a comparable vehicle. Tragically, I could never have the capacity to know, yet one thing I knew was that a few autos were all the more effective (and speedier) than others. How might I know which one was quicker? Simple, get the span of its motor and off you go; the greater the motor, the more the power. This equation really worked extremely well for me, until the point when the day I took a restricted trip to England.
Gratefully I got my UK driving permit inside four months and got an opportunity to drive my uncle’s new BMW. How quick would it say it was? All things considered, not very quick since it had a 2000cc diesel motor simply like Corolla 2.0D. In any event that is the thing that I let myself know until the point that I hit the throttle and my God, the auto was quick. In any case, how on earth was it speedier, definitely it was only a “2.0D” like our neighborhood “2D Corolla”. At that point for what reason did it quicken so ruthlessly?
My interest took me through a considerable measure of research, and before its finish, I understood that my recipe for knowing which auto is speedier was absolutely off-base. Looking at vehicles by estimating their motor size resembled contrasting the quality of men utilizing their weight. A jock/powerlifter may weight not as much as an overweight respectable man, however, is probably going to turn out more grounded by and large. Essentially, an auto can have a little motor, yet can be substantially quicker than its opponent – see McLaren MP4-12C with a 3.8-liter motor versus Portage Mustang 5.0-liter motor. McLaren will wipe the floor with a Ford.
Engine Output
Since auto motors are winding up progressively complex by the day, it is monotonous to look at their sizes and monitor the advances inside them. To get around this, specialists utilize the metric “Greatest Output” to analyze the energy of auto motors.
The most extreme yield of a motor is estimated utilizing a gadget called dynamometer which figures the power of a motor at various RPMs. The greatest yield estimated is then recorded down in the auto’s pamphlet alongside the RPM perusing on which it was acquired. The line beneath demonstrates the most extreme yield of a Toyota Yaris(Vitz) appeared in its UK
handout.Maximum Output (kW@rpm): 51/6000
Using this information we know that the maximum output of a 1000cc (1.0-liter) Toyota Yaris (Vitz) is 51 kW when the engine touches 6000 RPM.
Engine Output and Horsepower
Just like the world cannot agree on whether to use miles or kilometers we have a similar problem with maximum output. The most popular units to measure an engine’s maximum output are:
• bhp (brake horsepower or often called just horsepower)
• kW (kilowatt)
• PS (pferdestärke)
We can easily convert an engine’s bhp to kW or PS using the following formulas:
• 1 PS = 0.986 horsepower
• 1kW = 1.341 horsepower
Using this we can calculate the maximum output of a 1000 cc (1.0 liter) Toyota Yaris (Vitz) as being 68.4 horsepower.
Comparing Horsepower
To put this concept into perspective, I decided to apply it to cars that I had driven in Pakistan over the years and see if my impressions about them hold true with the numbers or not.
Car Variant Engine Maximum Output
Toyota Corolla (2003) GLi Petrol 1300 cc 87 bhp*
Toyota Corolla (2005) SE Saloon Petrol 1600 cc 110 bhp*
Toyota Vitz (2006) – Petrol 1000 cc 68 bhp
Toyota Corolla (2015) Altis Petrol 1800 cc 138 bhp
*These values have been verified online but the source was not as authentic as the manufacturer itself
The values obtained do match somewhat with what I experienced such as Toyota Corolla GLi which has a 1300cc petrol engine would struggle to climb the road leading to Pir Sohawa (Islamabad) on 2nd gear with five people unless I had a high approaching speed. I have found my old automatic Toyota Vitz (1000cc petrol engine) to be found wanting for more as well.
Toyota Corolla SE Saloon (1600 cc petrol) and Toyota Altis (1800 cc petrol) however seem to cruise through those hills which appears totally with their official horsepower figures.
Power to Weight Ratio
This examination appears to be sensible, yet there is one admonition. A 1300cc motor with 87 bhp may feel effective on an auto the measure of a Suzuki Mehran, however, would do not have the punch when fitted on a vehicle the span of a Toyota Land Cruiser.
To locate the genuine energy of an auto, we would need to think about its pull and weight, conveying us to the idea of energy to weight proportion. As its name recommends the ability to weight proportion is computed by taking an auto’s torque and partitioning it by the auto’s check weight** in tons.
** Curb weight of a car is defined as its weight without any baggage or passengers in it
Using this formula we get the following results when comparing the same cars as above.
Car Variant Engine Maximum Output Curb Weight Power to Weight Ratio
Toyota Corolla (2003) GLi Petrol 1300 cc 87 bhp* 1160 kg* 75
Toyota Corolla (2005) SE Saloon Petrol 1600 cc 110 bhp* 1160 kg* 95
Toyota Vitz (2006) – Petrol 1000 cc 68 bhp 980 kg* 69
Toyota Corolla (2015) Altis Petrol 1800 cc 138 bhp 1275 kg* 108
*These values have been verified online but the source was not as authentic as the manufacturer itself
Since the overall results have not changed much, it would mean that my personal impressions about the power of each car were on par with the actual numbers.
Using this formula, I decided to pool some of the cars available in Pakistani market together and see how they stack up against one another.
Car Variant Engine Max. Output Curb Weight Power to Weight Ratio
Saloons
Honda Civic (2018) VT. Turbo Petrol 1500 cc 170 bhp 1282 kg 133
Honda Civic (2018) i-VTEC Petrol 1800 cc 138 bhp 1267 kg 109
Toyota Corolla (2018) 1.8L Altis Petrol 1800 cc 138 bhp 1275 kg* 108*
Honda City (2018) City 1.5L Petrol 1500 cc 118 bhp 1155 kg* 102*
Toyota Corolla (2018) 1.6L Altis Petrol 1600 cc 120 bhp 1275 kg* 94*
Toyota Prius (2018) Hybrid 1800 cc 121 bhp* 1395 kg 87*
Honda City (2018) City 1.3L Petrol 1300 cc 98 bhp 1155 kg* 85*
Toyota Corolla (2018) XLi Petrol 1300 cc 84 bhp 1275 kg* 66*
Hatchbacks
Honda Fit (2015) Hybrid 1500 cc 130 bhp 1140 kg* 114*
Toyota Aqua (2014) Hybrid 1500 cc 99 bhp 1132 kg 87
Suzuki Swift (2018) DLX Petrol 1300 cc 90 bhp 1050 kg* 86*
Mitsubishi Mirage (2015) Petrol 1000 cc 70 bhp * 845 kg* 83*
Suzuki WagonR (2018) Petrol 1000 cc 67 bhp 830 kg 81
Suzuki Cultus (2018) Petrol 1000 cc 67 bhp* 835 kg* 80*
Toyota Passo (2014) Petrol 1000 cc 68 bhp* 910 kg* 75*
Suzuki Mehran (2018) VX Petrol 800 cc 39 bhp 630 kg* 62*
*These values have been verified online but the source was not as authentic as the
manufacturer itself.
Since I have not by and by driven a large portion of these autos, I can’t underwrite the numbers, yet as it’s been said, the numbers don’t lie. From what we can see, Honda Civic I-VTEC Turbo is shockingly capable and effortlessly crushes every single other auto in its portion without a doubt.
On the off chance that that was insufficient Honda gave another beating to its rivals in the hatchback portion with the assistance of Honda Fit beating the following best, Toyota Aqua, by an agreeable 27 bhp/ton. Setting Honda Fit aside, however, the table demonstrates to us that our own one of a kind Suzuki Swift contends great with its foreign-made opponents yet has far to go in the event that it needs to give any genuine rivalry to the diagram topper in this specific table.
