Subaru WRX vs Mercedes-AMG E63

What's the difference?

VS
Subaru WRX
Subaru WRX

$48,190 - $63,990

2026 price

Mercedes-AMG E63
Mercedes-AMG E63

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2021 price

Summary

2026 Subaru WRX
2021 Mercedes-AMG E63
Safety Rating

Engine Type
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Twin Turbo V8, 4.0L
Fuel Type
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Premium Unleaded Petrol
Fuel Efficiency
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12.3L/100km (combined)
Seating
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5
Dislikes
  • Thirsty engine
  • No extra power over rest of range
  • No rear parking sensors

  • Fiddly steering wheel controllers
  • Tight rear door apertures
  • Thirsty
2026 Subaru WRX Summary

The Subaru WRX – do we even need to introduce this iconic beastie at all? With its rally winning roots to being a legend in its own suburb, the ‘Rex’ is a sports car that’s affordable and fun – although the one we’re testing here is one of the pricier versions: the WRX tS Spec B.  

So what is a tS Spec B? Well, the old king of the WRX world – the STI – was retired at the end of the previous generation. Now this new grade – the tS Spec B – is the new WRX monarch. 

So does this mean the tS Spec B has more superpower than the rest of the line-up? Does it have a bigger engine? How much more does it cost? Does it have a manual gearbox? So many questions – the answers are below.

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2021 Mercedes-AMG E63 Summary

Feels like lately all the Mercedes-AMG buzz has been at the smaller end of the scale.

Most recently, the screaming GLA 45 S has arrived in Australia, pumping out more kilowatts and newton-metres than any compact SUV has a right to.

But here, we're doubling the cylinder count to eight, arranging them in a vee, and lighting the wick on AMG's powerhouse mid-size sedan, the recently upgraded E 63 S.

While the ferocious twin-turbo V8 and the rest of this beast's powertrain are unchanged, the car has been brought up to speed with some aero-focused styling tweaks, Merc's latest 'Widescreen' digital cockpit, as well as the MBUX multimedia system, and a tricky new multi-function sports steering wheel.

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Deep dive comparison

2026 Subaru WRX 2021 Mercedes-AMG E63

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