Go Back  AudiWorld Forums > Audi Models > Audi A3 / S3 / RS 3 > Audi A3 / S3 / RS 3 MKII
Reload this Page >

Mechanical differences between A3 and S3?

Audi A3 / S3 / RS 3 MKII Discussion forum for the 2015 and up Audi A3, S3 and RS3 - including the upcoming E-tron and TDI models

Mechanical differences between A3 and S3?

 
Old 07-09-2019, 06:18 AM
  #1  
AudiWorld Super User
Thread Starter
 
Join Date: Aug 2002
Posts: 5,370
Likes: 0
Received 0 Likes on 0 Posts
Default Mechanical differences between A3 and S3?

Curious if anyone can list these? I assume the brakes are bigger, and obviously the HP/TQ is higher on the S3. Is it just that the boost pressure is increased? Is it not pretty much the same engine? Can the same effect be achieved via a REVO/APR tune?

Not interested in cosmetic differences, just mechanical (Engine/ Exhaust/ suspension, etc)

Thank you in advance.
KEVIN97A4 is offline  
Old 07-09-2019, 07:31 AM
  #2  
AudiWorld Member
 
Join Date: Sep 2016
Location: Vancouver, B.C.
Posts: 200
Received 6 Likes on 5 Posts
Default


Last edited by Flying Scotsman; 07-09-2019 at 07:34 AM.
Flying Scotsman is offline  
Old 07-09-2019, 07:42 AM
  #3  
AudiWorld Super User
Thread Starter
 
Join Date: Aug 2002
Posts: 5,370
Likes: 0
Received 0 Likes on 0 Posts
Default

thank you for that...interesting read about the engine...seems like quite different mechanically to be able to safely transfer more power.... any other differences other than the motor?
KEVIN97A4 is offline  
Old 07-09-2019, 08:11 AM
  #4  
AudiWorld Member
 
Join Date: Sep 2016
Location: Vancouver, B.C.
Posts: 200
Received 6 Likes on 5 Posts
Default

Suspension, mag ride.....exhaust with flaps open in sport, dynamic mode....haldex with dynamic mode(more power to rear wheels) steering wheel, etc. etc.
Flying Scotsman is offline  
Old 07-10-2019, 01:22 AM
  #5  
AudiWorld Member
 
PaperLion's Avatar
 
Join Date: Feb 2019
Location: San Antonio
Posts: 66
Likes: 0
Received 3 Likes on 1 Post
Default

Don't forget harsh ride, rattling and squeaking, which is provided on the S3 but not available as an option on the A3.

Seriously.
PaperLion is offline  
Old 07-10-2019, 07:00 AM
  #6  
AudiWorld Member
 
Join Date: Sep 2016
Location: Vancouver, B.C.
Posts: 200
Received 6 Likes on 5 Posts
Default

Well my bum is quite happy in my S3 and I have no snakes or mice in the car.
Flying Scotsman is offline  
The following 2 users liked this post by Flying Scotsman:
nate (07-11-2019), Wilddwightman (07-10-2019)
Old 07-10-2019, 11:44 AM
  #7  
AudiWorld Newcomer
 
Join Date: Dec 2018
Posts: 4
Likes: 0
Received 1 Like on 1 Post
Default

I think the OP is asking if the internal engine components are different between the A3 vs S3. My hunch is they are not. The S3 article you linked mentioned upgrade connecting rods. Per ECS, the A3 and S3 have the same part number. I bet that's true of other engine components like the pistons. The block is definitely the same. I believe the only real engine difference is the turbo size, IS20 vs. IS38 and the tuning software. I would love if someone could proof me wrong.
Steve Kraut is offline  
Old 07-11-2019, 02:54 AM
  #8  
AudiWorld Member
 
PaperLion's Avatar
 
Join Date: Feb 2019
Location: San Antonio
Posts: 66
Likes: 0
Received 3 Likes on 1 Post
Default

Yah, I was trying to be funny about the rattles and ride quality, but I was also serious, an A3 premium with 17 inch wheels and standard suspension height drives totally differently from an S3 that is tricked out with 19 inch rubber bands when it comes to comfort and noise levels.

That should be obvious, but somehow I was surprised by it when I went from one to the other.
PaperLion is offline  
Old 07-11-2019, 09:35 AM
  #9  
AudiWorld Super User
Thread Starter
 
Join Date: Aug 2002
Posts: 5,370
Likes: 0
Received 0 Likes on 0 Posts
Default

I live in a city where the roads are total trash. I'd never be on 19s or 20s. I was simply trying to see if an A3 on 18s with sports package and a REVO or APR tune would be comparable to a stock s3 on 18s. Hence curious about mechanical differences.
KEVIN97A4 is offline  
Old 07-11-2019, 02:23 PM
  #10  
AudiWorld Member
 
Join Date: Sep 2016
Location: Vancouver, B.C.
Posts: 200
Received 6 Likes on 5 Posts
Default

The biggest issue with that package is your warranty is null and void. Also that sports package includes a sports suspension and that is lowered and probably equivalent to 19" and S3 mag ride in auto setting as far as ride quality

Last edited by Flying Scotsman; 07-11-2019 at 02:31 PM.
Flying Scotsman is offline  

Thread Tools
Search this Thread
Quick Reply: Mechanical differences between A3 and S3?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: