Audi A3 vs Mercedes-Benz C250

What's the difference?

VS
Audi A3
Audi A3

$30,000 - $74,990

2025 price

Mercedes-Benz C250
Mercedes-Benz C250

2018 price

Summary

2025 Audi A3
2018 Mercedes-Benz C250
Safety Rating

Engine Type
Turbo 4, 1.5L

Diesel Turbo 4, 2.1L
Fuel Type
Premium Unleaded Petrol

Diesel
Fuel Efficiency
5.3L/100km (combined)

4.7L/100km (combined)
Seating
5

4
Dislikes
  • Ride is a bit stiff
  • Back seat is tight
  • Lacks some modern features

  • Engine loud under heavy acceleration
  • Gearbox can feel clunky in lower gears
  • C200 not overly dynamic
2025 Audi A3 Summary

Can a hatchback still be a fun and fashionable way to get around when the SUV has become such a status trend?

The facelifted Audi A3 certainly makes a case for it.

The refreshed 2025 A3 is, as Audi puts it, more competitive than before when it comes to not only value but also, you might agree, style.

Last year, before the update even arrived, the A3 sold almost as well as its Volkswagen Golf corporate sibling. In fact, it’s Audi’s third most popular model behind the Q3 and Q5 SUVs.

It’s also third in its segment of ‘Small cars under $40,000’, behind only the MG4 electric car and, you guessed it, the VW Golf.

As such, it also outsells its actual closest rivals the BMW 1 Series and Mercedes-Benz A-Class, both of which are close to the A3 on price.

Now that it’s been given a bit more razzle dazzle, let’s see if the A3 can keep that momentum going.

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2018 Mercedes-Benz C250 Summary

If you’re picturing the premium mid-size segment in Australia, you’re almost certainly picturing Mercedes-Benz. Honestly, the premium carmaker has the kind of powerful and unquestioning stranglehold on the segment that would have despots and dictators turning green with envy.

The C-Class often outsells its nearest competitor by a factor of two to one. Even more impressive, that nearest competitor is another Mercedes, the CLA. Audi and BMW are left off in the middle distance, duking it out for third and fourth place.

So yes, the C-Class is a very important car for Mercedes. And this new one, updated for 2019, is even more so. It’s the first major update in the current car’s four-year lifespan, with a handful of exterior tweaks, some new key cabin technology and, most importantly, a new and clever engine option for its top-selling version.

So is that enough to keep the C-Class at the top of the mid-size pile?

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Deep dive comparison

2025 Audi A3 2018 Mercedes-Benz C250

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