V6 engine vs. V8 engine: Is the V8 worth the hype?


Posted by: Ikeokwu Chidozie

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V8 engine is the rising trend in latest released models. But is it really better than the V6? Check out our comparison in terms of fuel consumption & power!

The automotive industry has seen engine innovations and advanced upgrades with regards to efficiency and function. The journey of the internal combustion engine has come to a point for comparing the V6 engine and the V8 engine. These two have featured in sport utility vehicles (SUV) and muscle designed sedan vehicles as well; so, we have to see what they both offer.

The discussion will contain details of the design, components, fuel consumption and power delivery of the two engines. This information will be necessary to help us understand which option to go for when there is a consideration to serve specific needs.

>>> See the latest models with V8 engines in 2019 from other car marques: 

The V6 engine

Engine manufacturing technology found good reasons to innovate designs and components into the powerful V6 engine. There had been straight 6-cylinder engine designs, but we are more interested in the V6 engine for the sake of our comparison. There are 6 cylinders designed to tilt at an angle to drive the same crankshaft in this engine.


V6 engine block

The V8 engine

Vehicle utility has always been a great factor that determines the direction of automotive innovations, and the V8 engine is built for this function. Being built with more power, the V8 engine is mostly fitted for all-wheel drive (AWD) or rear wheel drive (RWD) transmission train vehicles.


V8 engine block

The difference between the V6 and V8 engine

Here, we will be comparing the V6 engine and V8 engine with their differences in this section, and we will focus on areas that are not entirely technical.

1. Design and technology

The V8 engine has 8 cylinders driving the crankshaft, and they are positioned to form a V-shape. The top of the engine reveals an array of four compartments on the right and four compartments on the left. Each of these compartments has their valves, plug, cylinder and connecting rods linked to the same crankshaft. It has short packaging because of the crankshaft which could be a flat plane type or a cross-plane type.

On the other hand, the V6 engine design has its 6 cylinders positioned at an angle to form the V-shape. These cylinders drive the crankshaft that accommodates the connecting rods coming from the cylinder heads. From the engine top, there are 6 plugs with 3 on each side of the solid V-shape; and these plugs supply charge to the six compartments in their configuration. Comparing the V6 engine and V8 engine has clearly helped us understand how their names relate to their designs.

>>> How about V4, How are 4-cylinder engine different to 6-cylinder engine?

2. Fuel consumption

In the V8 engine, 8 cylinders have their fuel intake valves; these supplies feed the internal combustion which happens when the spark plug ignites it. More force is transferred as torque to the crankshaft, and this was the purpose for the heavy duty design.

The V6 engine receives fuel supply to 6 cylinders in their compartments to generate power as well through the internal combustion. The drive force from this engine configuration is considerably efficient with the fuel it consumes.

There is a significant difference in this area of our discussion because the considerations clearly state that the fuel consumption in the V6 engine is less than that of the V8 engine.

>>> You may also like to read: 9 myths about fuel economy

3. Power

From the design consideration, the V8 engine is intended for more utility purposes than the V6 engine. 8 cylinders in the V8 engine send their individual torque to the crankshaft to generate higher engine horsepower. They collectively produce enough power to drive larger vehicle chassis designs and heavy-duty drivetrains.

The V6 engine, on the other hand, generates its power from 6 cylinders which are also effective for a mid-range utility vehicle. They seem to be a suitable design for the urban lifestyle where engine power is necessary on an effective budget, since the vehicle drivetrains may not be loaded very often.

>>> Mercedes-AMG GLS 63 and BMW X6 M are 2 of the most powerful and most expensive SUVs with V8 engines. See the rest!

4. Weight

The V8 engine is heavy-duty; this captures the weight and utility of the design. The technology involved in this engine design accommodates more components in the extra cylinder compartments available. The weight of the V8 engine is suitable for vehicles with heavy chassis design especially due to their function and power requirement.

The V6 engine is designed to be lighter than the V8 engine since it does not have to do as much work as the V8 engine. The light weight makes it a good option for the mid-range SUVs and recent crossover vehicles as well as some sedan cars.

Video: S4, S6, V6, V8 & V12 Engine Animation

5. Engine Displacement

This is the measure of the effort made by the cylinders in metric units; the bore and stroke have to be considered. The bore is the diameter of the cylinder while the stroke is the depth which the connecting rod pushes down and up.

The V8 engine offers more displacement than the V6 engine, and this is usually measured in cm3 or cc. This contributes to the power production of the engine.

>>> Toyota is one car manufacturer that go against the trend when dropping the V8 engine on their Land Cruiser. Click to check out!

6. Cost and maintenance

On the consideration of costs, the V8 engine definitely costs more than the V6 engine with all the extra components and features it comes with. There can only be customized variants of the V6 engine that would measure up to the V8 engine in cost.

The maintenance aspect has seen the V6 being more cost effective than the V8 engine; mechanics will charge more to handle the heavier and more complex V8 engine design. The V6 engine is less expensive to maintain since it has two cylinders less than its counterpart. It is important to also note that fuel consumption plays a role in the cost consideration.

>>> Comparison articles you might wanna check out:

The above are points on comparing the V6 engine and V8 engine; although there are some similarities which include their working principle, V-shape and peripheral components. The choice of owning a vehicle with the V8 engine or V6 engine is completely dependent on the customer’s decision.

Comparing the V6 engine and V8 engine simply helps to expose information on any confusing area related to these engines. Buyers may want to consider their use for the vehicle, budget, and lifestyle when they plan their next purchase.

>>> Keep yourself updated to the latest car maintenance and driving tips on Naijauto.com!

Ikeokwu Chidozie

Ikeokwu Chidozie


Chidozie is an innovative content writer with an academic degree in Mechanical Engineering. He combines his experience in transportation and logistics with creative writing to provide his audience with credible articles on automobiles. Always visit naijauto.com and be guaranteed of expert vehicle reviews, tips, advices and news from this excellent writer.

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