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The Audi S4 Biturbo 

A buyers guide 

By Nilesh Ramrattan 
 

1. 

Homework

 

2. 

Model Specifics

 

3. 

Choosing a Vehicle

 

4. 

Options

 

5. 

Finding an S4

 

6. 

The phone call

 

7. 

Modifications

 

8. 

Bodywork

 

9. 

Servicing

 

10. 

Recalls

 

11. 

Test Drive

 

12. 

Transmission

 

13. 

Brakes

 

14. 

Electrical

 

15. 

Engine

 

16. 

Interior

 

17. 

Screening

 

18. 

A time to buy…

 

19. 

Buyers Checklist

 

20. 

Checklist

 

The Audi S4 Biturbo

 

 

 

O

K – So now you’ve done your homework – you’ve 

decided that you want a fast yet understated saloon or 
estate car (sedan or station wagon). 
 

You’ll want a car that will last, a car that is 

safe, sure footed, and to a certain degree a 

car that you can “grow” with

 
You want a six-speed manual or tiptronic transmission, 
permanent four-wheel drive, and a six cylinder turbo-
charged engine with the very latest five-valve per 
cylinder technology, superb build quality, and lots of 
“go”. 
 
You’ve convinced your better half and your bank 
manager, you’ve checked with the insurance company 
that you can be covered and you’ve satisfied your 
conscience that you’ve made the “right” choice. 
 
You’ve made the decision to buy an Audi S4.  Here’s 
how to make the vision into reality... 

 

Model Specifics 

Where do you go from here?  Well, firstly you might 
want to appreciate that the Audi S4 biturbo was first 
released in Europe in 1998, with North America and 
Canada being introduced to the model in 2000, so there 
are actually two different models available in Europe. 
 
The external differences can be seen quite quickly, with 
early vehicles featuring square side-repeaters, thin 
body-mouldings, flush

 

mounted door handles, and 

Xenon headlamps with separate indicators.  It takes 
quite an eye to see, but you may also note that the door-
mirrors on earlier cars are not quite as “angular” as 
those of its successor. 
 
You’ll also need to know when browsing through local 
classifieds and dealer pages that an S4 listed as circa 
1994 is not a misprint, and while it is a fabulous car, 
you do not want to waste valuable time looking at it!  
 
The early S4’s (or urS4’s as they are sometimes 
referred to) are based on the last model Audi 100 cars, 
and feature a 20-valve 5-cylinder turbocharged engine 
as found in the Audi S2. 

 

 

Audi S4’s V6 Biturbo Power Plant 

 

 

Choosing a vehicle 

By choosing an Audi S4 biturbo, you’ve actually cut 
out some major hassles usually associated with car 
buying right from the start. 
 
At the time of writing, the oldest Audi S4 biturbos have 
only been in circulation for under 3-years.  This means 
that in most cases, you can rely on them having 
relatively low mileages, having been well looked after, 
sporting service history from the main dealer, and still 
benefiting from the manufacturers warranty. 
 
Problems such as rust, mechanical wear, and other such 
issues do not really come into the equation when 
buying an S4, especially since the car is fully 
galvanised and because it is exceptionally robust.  But, 
as with all cars (and there is a but), there are some 
issues you do need to be made aware of – most of 
which stem from cars that have been modified, cars that 
have been poorly repaired after accidents and cars that 
have been repaired after vandalism. 
 
Be aware that although the Audi S4 biturbo is limited to 
a low annual production figure, there is a good quantity 
available on the market to choose from, so if at first you 
don’t find quite what you’re looking for, try the next 
one! 
 
For worry free motoring it is recommended that you 
choose an example with low to average mileage, a 

Summary of Contents for S4 Biturbo

Page 1: ...an eye to see but you may also note that the door mirrors on earlier cars are not quite as angular as those of its successor You ll also need to know when browsing through local classifieds and dealer pages that an S4 listed as circa 1994 is not a misprint and while it is a fabulous car you do not want to waste valuable time looking at it The early S4 s or urS4 s as they are sometimes referred to ...

Page 2: ...ther and Alcantara a man made suede like material available in a vivid blue or platinum Blue Alcantara Interior Door and Dash inserts are available in three variants walnut burr silver aluminium and carbon fibre note that not all finishes are available in all markets for example walnut burr is not available in the UK So once you ve established a basic specification for your potential used S4 decid...

Page 3: ...ferences you may wish to purchase an original vehicle or a vehicle that has been modified If you elect to go for the latter depending on which country or state you live in you may be required to pay additional insurance premiums depending on the modifications rendered These cars usually tend to have issues that the main dealer may be unable or unwilling to assist you with and you ll want to note t...

Page 4: ...e suspension plastic trim or floor pans Make sure that the key for the locking wheel bolts is available and safely stored If the car has been lowered check under the wheel arches and see if any rubbing of tyres and paintwork has occurred Turn the steering wheel to the left and right and again check for rubbing or wear Servicing Regular servicing and maintenance always pays dividends Late model Aud...

Page 5: ...umn to a position that suits you Locate equipment such as lights indicators wipers park brake and emergency hazard light switches before you pull away When switching on the ignition check for any warning lights that stay on after the car is started Pay particular attention to lights including Airbag Brakes and temperature The understated lines of the S4 Saloon When you re comfortable take the car ...

Page 6: ...less cost you to repair Engine The engine is one of Audi s most modern and advanced power plants and as such you ll be hard pushed to find a bad one that smokes and splutters If you do walk away From cold check the oil and water levels If you find the oil to be dirty or the anti freeze to be weak or off colour usually a pinky red or greeny blue colour if all is in order then insist it is changed p...

Page 7: ...d walk away Ask the owner to show you the Radio and locking wheel bolt codes If they are unable to do so and suggest that the dealership knows the codes check with the dealer before you commit yourself to any purchase Screening In this day and age of uncertainty with high insurance premiums theft at an all time high and unscrupulous individuals ringing and chopping cutting and shutting you ll want...

Page 8: ...e boot may indicate collision damage If car appears newly painted ask why Tyres Wear should be even on each tyre and among the set Tires should be the same size rating and preferably the same make Wear should be consistent with odometer mileage Insist on a spare jack and wheel brace if they re missing Check for the locking wheel key Suspension Push down and release each corner of car If it bounces...

Page 9: ...es defective 2 Does the car pull to one side when braking 3 Do the brakes squeal 4 Are there any unusual noises or smells 5 Does the park brake work 6 Does the steering wheel shake or vibrate 7 Does the car pull to one side 8 Is changing gear difficult 9 Does the gear lever jump on acceleration or braking 10 Does the clutch slip or snatch 11 Does the engine sound different when the clutch is press...

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