Fuel Efficiency

The Fuel Efficiency Info That Might Be Useful To You

Compact City Cars

Hyundai i10 - 5.0litre/100km
Proton Savvy - 5.7litre/100km
Kia Picanto - 5.8litre/100km

Compact Premium Cars

Mini Cooper - 5.8litre/100km
Honda Jazz - 6.4litre/100km
Alfa Mito - 6.5litre/100km

Small Family Cars

Toyota Vios ‘J’ - 6.1litre/100km
Proton Persona - 6.75litre/100km
Honda City - 6.8litre/100km

Luxury Family Cars

Nissan Slyphy - 7.8litre/100km
Hyundai Elantra - 7.9litre/100km
Peugeot 407 - 8.1litre/100km

Premium Family Cars

Mercedes Benz B180 - 7.2litre/100km
Volvo S40 - 7.9litre/100km
Toyota Camry - 8.8litre/100km

Executive Cars

BMW 320i - 6.1litre/100km
Audi A4 - 7.4litre/100km
Mercedes C-Class 200K - 8.0litre/100km

Premium Executive Cars

Citroen C5 - 8.9litre/100km
BMW 525i - 9.4litre/100km)
Mercedes E-Class E200K - 9.6litre/100km

Super Saloons

Audi A8 - 9.9litre/100km
Mercedes Benz S-Class S350 - 10.0litre/100km
Lexus LS460 - 11.1litre/100km

Super Sport Cars

Lotus Exige - 9.1litre/100km
Porsche 911 PDK - 10.3litre/100km
Nissan 370Z - 10.5litre/100km

Super Sport Convertibles

SLK 200K - 8.1litre/100km

Volkswagen TFSi - 8.2litre/100km
Porsche Boxster - 9.4litre/100km

Performance Cars

Peugeot 308 GT - 6.8litre/100km
Mini Cooper S JCW - 6.9litre/100km
VW Scirocco TFSi - 7.6litre/100km

Pickup Trucks

Isuzu D-Max Hi-DEF Diesel - 7.6litre/100km
Ssangyong Actyon Sports Diesel - 8.0litre/100km
Nissan Navara Diesel - 8.2litre/100km

Compact MPV’s

Renault Kangoo 1.5 - 5.5litre/100km
Honda Stream 1.8 - 6.7litre/100km
Nissan Grand Livina - 7.6litre/100km

Luxury MPV’s

Mazda5 - 8.2litre/100km
Hyundai Starex Diesel - 9.6litre/100km
Ssangyong Stavic Diesel - 9.7litre/100km

Compact SUV’s

Ssangyong Actyon Sports Diesel - 8.0litre/100km
Honda CRV 8- 8.2 litre/100km
Audi Q5 TFSi - 8.4litre/100km

Luxury SUV’s

Volvo XC90 D5 Diesel - 8.5 litre/100km
BMW X5 3.0 Diesel - 8.7litre/100km
Audi Q7 3.0 Diesel - 9.9litre/100km

Hybrids
Toyota Prius Hybrid - 3.9litre/100km
Honda Civic Hybrid - 4.6litre/100km

Looks like the perodua car is not in the list.

DVVT, VVT-i, MIVEC and VTEC

Here's the comparison about various engines specs.


The main change between Perodua Viva and it's predecessors (Perodua Kelisa and Perodua Kancil) would be their engines. Then it came the term of DVVT, and Perodua claiming their 1.3l DVVT saves fuel and provide power as same as normal 1.5l engines.

Let get back to the basics, DVVT or it's full name Daihatsu Valve Variable Timing is based (copycat) on Daihatsu mother company Toyota engine, which is VVT-i (Variable Valve Timing - intelligence). We believe that DVVT is just VVT-i's engine brand name for Daihatsu cars. DVVT and VVT-i is based by Yamaha's YPVS (Yamaha Power Valve System).

Yamaha was bought over by Toyota for it's YPVS because Toyota afraid of losing to Mitsubishi's MIVEC and Honda's Vtec. Yamaha has been provinding Toyota and Daihatsu engines since. DVVT and VVT-i engines are always put together to be compared with V-tec (Variable Valve Timing and Lift Electronic Control System), i-DSI (intelligent Dual and Sequential Ignition) that is developed by Honda earlier.

All of the Vs (DVVT, VVT-i, i-DSI, Vtec, CVCC, MIVEC, CVVT...) was meant to increase fuel efficiency which is to use less fuel and produce more power from the engine. The objective is the same, the only difference would be their methods. DVVT and VVT-i Normal engines is good in the low RPM. However, when the RPM reaches higher level, the amount of power produced per fuel is lesser. This is because the air from outside the engine couldn't get into the combustion space in a short period of time.


That's what Yamaha sees, and they developed YPVS, VVT-i and DVVT. DVVT and VVT-i valve works like a normal engine while in low RPM. However, as the RPM increases, the valve timer shifts the time of opening of the valve a little bit earlier. The higher the RPM goes, the earlier the valve opens. By doing this, air would have enough time to go into the ignition room, thus making the fuel burning in high RPM more efficient than conventional internal combustion engine.

Vtec have the same idea with DVVT and VVT-i. It acts like a normal fossil combustion engine in low RPM, however when the user revs until certain limit (usuall 5000rpm).



The valve timer would activate (this is what people usually calls Vtec change) and produce a noisy sound. It sounds a little bit like a 2-stroke motorcycle engine revs high. You feel like the torque suddenly increases and you have more power to accelerate. What actually happens is that the valve intake open longer than normal.

Allowing more air to come into the combustion chamber. The more air in the chamber, the more efficient the fuel burns. i-DSI i-DSI is a new technology by Honda. Instead of changing the valve timing of an engine, Honda put two spark plugs on each piston. The reason is the same, to burn the fossil more efficiently.

These spark plugs however have the main and secondary plugs. The main plugs usually sparks first, followed by the secondary plugs to burn the remaining gas in the chamber.

Conclusion DVVT, VVT-i, Vtec and i-DSI is a good way developed by Japanese car automaker (Toyota and Honda) to improve the burning of fossil gas. All of them have the same objective (increase efficiency) and they do achieve their goals.

Perodua now have implement DVVT engines in Perodua Kelisa and Perodua Kancil replacements (Perodua Viva). people are waiting that Perodua would implement a 7-gear no gap gearbox (like Honda Jazz) in their future installments, because that surely would increase the fuel efficiency of a car.