Diesel engines burn as much as 30 percent less fuel than that burned

Question

Diesel engines burn as much as 30 percent less fuel than that burned by gasoline engines of comparable size while emitting far less carbon dioxide gas and far fewer of the other greenhouse gases that have been implicated in global warming.

A) burn as much as 30 percent less fuel than that burned by gasoline engines

B) burn as much as 30 percent less fuel than that for gasoline engines that are

C) burn as much as 30 percent less fuel than do gasoline engines

D) burning as much as 30 percent less fuel than do gasoline engines that are

E) that burn as much as 30 percent less fuel than that burned by gasoline engines

A is wrong because the elements are not parallel. What does that refers to after than?
It refers to fuel.
So, lets see the sentence: -
Diesel engines burn as much as 30 percent less fuel than that(fuel) burned by gasoline engines
Is this making sense now? No, right?
We need to have Diesel engines burn as much as 30 percent less fuel than burned by gasoline engines - this choice is presented in C.

sayan640 · Accepted Answer

"burn as much as 30 percent less fuel" -- one action

We need another action to compare using "than".

"do gasoline engines"--- another action...

C is the correct answer.

A is incorrect because it uses a noun i.e " that burned by gasoline engines" after than.

Before "than" one action is there . So after "than" also another action should be there.

Please give me kudo s if you liked my explanation.

kingbily · Answer

Yup, diesel engines work on compression, while alcohol, gas, and nitro engines use glow or spark plugs.
Diesel engines work like fire pistons, compressing the fuel/air mix to the point of ignition since air heats up when compressed. Look up the fire piston if you don't know what it is...﻿

Rainish · Answer

GMATNinja  could you help explain why A is incorrect.
Thanks in advance!

Kanika3agg · Answer

Diesel engines burn as much as 30 percent less fuel than that burned by gasoline engines of comparable size while emitting far less carbon dioxide gas and far fewer of the other greenhouse gases that have been implicated in global warming.

A) burn as much as 30 percent less fuel than that burned by gasoline engines

B) burn as much as 30 percent less fuel than that for gasoline engines that are

C) burn as much as 30 percent less fuel than do gasoline engines

D) burning as much as 30 percent less fuel than do gasoline engines that are

E) that burn as much as 30 percent less fuel than that burned by gasoline engines

A is wrong because the elements are not parallel. What does that refers to after than?
It refers to fuel.
So, lets see the sentence: -
Diesel engines burn as much as 30 percent less fuel than that(fuel) burned by gasoline engines
Is this making sense now? No, right?
We need to have Diesel engines burn as much as 30 percent less fuel than burned by gasoline engines - this choice is presented in C.

daagh · Answer

Let's read choice A together with the non-underlined phrase 'diesel engines' and one can understand why A is wrong. It is nothing but an illegal comparison of the diesel engines with 'that', i.e. fuel, (as also in B). Only C correctly compares how much diesel engines burn to how much gasoline engines burn. 
D and E are outright fragments.

Gmat20201 · Answer

Diesel engines   burn as much as 30 percent less fuel than that burned by gasoline engines   of comparable size while emitting far less carbon dioxide gas and far fewer of the other greenhouse gases that have been implicated in global warming.

A) burn as much as 30 percent less fuel than that burned by gasoline engines
 - " Diesel engines burn as much as 30 percent less fuel than fuel burned by gasoline engines"-- clearly incorrect 
 comparison between" diesel engines" and "fuel"

B) burn as much as 30 percent less fuel than that for gasoline engines that are
 - Same comparison issue as in choice A
 - "that are"- unnecessarily wordy 
 gasoline engines that are of comparable size is wordy ..gasoline engines of comparable size is more concise.

C) burn as much as 30 percent less fuel than do gasoline engines
 - Correct

D) burning as much as 30 percent less fuel than do gasoline engines that are
 - Verb "burn" is required to complete sentence. "burning"- is not verb so choice D is fragment.

E) that burn as much as 30 percent less fuel than that burned by gasoline engines
 - Verb is missing for subject " Diesel engines" so choice E is fragment.

Ans choice C is Correct

Irising · Answer

Could you please explain why "burning" is not a verb in this case? Thanks!

sargam2198 · Answer

Diesel engines burn   as much as 30 percent 
 less fuel 
 than 
  that burned by gasoline engines  of comparable size while emitting far less carbon dioxide gas and far fewer of the other greenhouse gases 
 that have been implicated in global warming.

A. burn as much as 30 percent less fuel than that burned by gasoline engines.
  Active not parallel to Passive comparison .  
B. burn as much as 30 percent less fuel than that for gasoline engines that are
 Unnecessary Wordy.
C. Action {X burn as much as 30 percent } || Action { do  gasoline engines}

kelly_jacques · Answer

Hello,
I am having trouble understanding how "do" is correct in option C. Is it correct to say "Diesel engines burn as much as 30 percent less fuel than do   gasoline engines"?

That seems off to me? Could you please explain the logic

VerbalBot · Answer

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Diesel engines burn as much as 30 percent less fuel than that burned

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Diesel engines burn as much as 30 percent less fuel than that burned

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