WHILE it might not be an obvious comparison, both of these pragmatic RS-badged Audis come with a glorious soundtrack.

And with the upcoming RS4 to add two turbos, but lose two cylinders from its Porsche-sourced 2.9-litre V6, they could be some of the last truly aurally special Audis. Except, that concept is largely blown apart, thankfully, by the five-pot screamer in the Audi RS3 – now available as a booted, and backseat-friendly sedan.

2017 Audi RS3 Sedan

Audi sports cars to go hybrid

Such is the rate of progress that the new kid on the block offers oomph akin to a supercar of the not-too-distant past.

The RS3 will sprint to 100km/h in just 4.1 seconds – or, 0.6 seconds faster than the RS4. Both are aided by venerable quattro all-wheel drive, dual-clutch gearboxes and launch control, but the sedan’s lighter weight and extra torque wins.

2013 Audi RS4 Avant

The RS3 sedan, with its wider front tyres compared to the rear, makes a solid case as an effortlessly fast compact sedan. Its warbling heart is reason enough, yet it’s also entry into the realm of RS for less than $100K.

Although, as a last bastion of naturally aspirated V8 Audis, the sonorous RS4 makes a compelling case for a future classic – just keep your poor dog out of the back.

u00a02017 Audi RS3 Sedan2013 Audi RS4 Avant
Engine2480cc inline-five, DOHC, 20v, turbo4163cc V8, DOHC, 32v
Power294kW @ 5850-7000rpm331kW @ 8250 rpm
Torque480Nm @ 1700-5850rpm430Nm @ 4000rpm
Weight1440kg1795kg
0-100km/h4.1sec (claimed)4.7sec (claimed)
Price$84,900$149,400 (new)