[n:CorE]

A thread I wholeheartedly resonate with. My 1.6 GT TDI is running a stage 2 tune with a downpipe. The downpipe adds more bass to the first crank but it quickly settles into a very clattery idle which is unmistakably the sound of a very agrarian diesel tractor. There is simply no sugarcoating this.

The only saving grace is that once on the move, the turbo whirrs and whines take over to a certain degree and post 3k RPM, it somehow miraculously sounds sporty and aggressive for a diesel.

The clutch of this car was hard and let vibrations through, even in stock form. With the delete of the catalytic converter, and having a rodent chew up bits of the under-bonnet damping and the Bilstein B6 suspension. NVH in my car is a lost cause.

It is not only its performance but even the NVH levels that have been turned up to eleven. A coal roller with stiff suspension and a peaky (read: exciting) power band, It's a glass of pure distilled pleasure for an enthusiast as far as I see it.

[ashis89]

Going off-topic here, I found another car to be surprisingly noisy - Merc GLE 250d.

The first time, I saw a rather new Merc GLE 250d in the basement parking of a mall. Even though the parking was spacious, I could hear the clatter echo to be very sharp and annoying.

There's another GLE 250 which visits our apartment regularly. I have heard that car too at idle and it was loud. Never expected a Mercedes to be this noisy.

[tirumalavoleti]

What should i write about. :-)

I owned both VAG diesel and Honda diesel. Cant drive neither with out an audio system.

Personally felt VAG diesel better than the Honda due to the cabin insulation inside. But outside noise, no clear worst

[BNG-motorhead]

Originally Posted by tirumalavoleti

What should i write about. :-)

I owned both VAG diesel and Honda diesel. Cant drive neither with out an audio system.

Personally felt VAG diesel better than the Honda due to the cabin insulation inside. But outside noise, no clear worst

Own a Skoda Fabia and used to own Honda Amaze Diesel 1st Gen. The Honda was waaaaay noisier. I tried everything, final possible solution was to take off the dashboard and reinforce the insulation. Sold the car before that. It was an old faithful though.

In fact, noticed that engine oil matters. Switched to a better brand, and NVH for Fabia as came down.

[maestro]

Originally Posted by Shreyans_Jain

My friend, you need to spend some time with a diesel City or Amaze. Honda’s 1.5 iDTEC takes the cake for being the single worst engine when it comes to NVH.



The VW engine sounds coarse in its own right, but at least it is rev happy and provides punchy performance and a wide torque curve.

The Hooda body is quite light. Increased NVH is also a reason due to the lower damping provided by less mass.

[BNG-motorhead]

Originally Posted by maestro

The Hooda body is quite light. Increased NVH is also a reason due to the lower damping provided by less mass.

Then why not petrol? Its just an unrefined engine with cost cutting on dampening. iDtec is the first diesel engine got honda.

[maestro]

Originally Posted by BNG-motorhead

Then why not petrol? Its just an unrefined engine with cost cutting on dampening. iDtec is the first diesel engine got honda.

Firstly, the Diesel engines are built much stronger, therefore heavier to withstand the higher stresses in a compression ignition engine. These engines also run with much more NVH than petrol.

Secondly, modern diesels are all direct injected. These engines are noisier than the old ones with the pre-combustion chamber. But they developed more power, better throttle response and fuel efficiency, hence is preferred in modern vehicles.

Thirdly, a lighter body has less mass to dampen out the engine vibrations, so some NVH felt inside the cabin, even though there is adequate amount of vibration dampening on the engine mount and noise insulation. This is not the case outside the vehicle.
Contrary to what you state, mechanically, diesels are far more fuel efficient, run cooler with all the attendant benefits, run longer due to the sturdy construction. On the flip side, they have more NVH, and emissions are more difficult to control, especially the particulate matters and SOX depend on type of fuel used. They are usually lower in NOX.

[BNG-motorhead]

Originally Posted by maestro

Firstly, the Diesel engines are built much stronger, therefore heavier to withstand the higher stresses in a compression ignition engine. These engines also run with much more NVH than petrol.

Secondly, modern diesels are all direct injected. These engines are noisier than the old ones with the pre-combustion chamber. But they developed more power, better throttle response and fuel efficiency, hence is preferred in modern vehicles.

Thirdly, a lighter body has less mass to dampen out the engine vibrations, so some NVH felt inside the cabin, even though there is adequate amount of vibration dampening on the engine mount and noise insulation. This is not the case outside the vehicle.
Contrary to what you state, mechanically, diesels are far more fuel efficient, run cooler with all the attendant benefits, run longer due to the sturdy construction. On the flip side, they have more NVH, and emissions are more difficult to control, especially the particulate matters and SOX depend on type of fuel used. They are usually lower in NOX.

Tech’s not the point. Point is insulation and using higher quality dampening material. Own both Honda diesel and VAG diesel. On the outside, similar noise. On the inside, VAG is much superior. Apart from engines, there is not much quality about the Honda.

Essentially, they swapped the petrol with diesel, kept the body quality same, listening Honda?

[dicor]

What I have noticed is all Germans and USAs and are noisy from day 1 and become tractor when they ages. I literally call my sister in laws Laura as TATA 407.

Japanese and Czech are smooth in initial days (Honda being an exception) and eventually they also become tractor... (Try to hear old Innova or Fortuner. They sound horrible)

I am yet to notice a loud Korean.

P.S. - This is purely for Diesels.