Cadillac Optiq vs Mercedes-Benz E300

What's the difference?

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Cadillac Optiq
Cadillac Optiq

$80,000 - $80,000

2026 price

Mercedes-Benz E300
Mercedes-Benz E300

2024 price

Summary

2026 Cadillac Optiq
2024 Mercedes-Benz E300
Safety Rating

Engine Type

Turbo 4, 2.0L
Fuel Type

Fuel Efficiency

2.2L/100km (combined)
Seating

5
Dislikes
  • Ride can feel brittle on harsh road surfaces
  • Slow DC charge rate
  • Five-year warranty feels underdone these days

  • Only one variant
  • Could do with more power
  • Price once optioned-up
2026 Cadillac Optiq Summary

The lonely Cadillac Lyriq finally has some company, with the iconic US brand tripling its range down under with the launch of the much bigger Vistiq (which we've already tested) and this entry-level Optiq, which Cadillac describes as the gateway to its electric family.

It's a medium all-electric SUV with plenty of equipment and – depending on whether you see it as an established premium player or another newcomer brand – pretty sharp pricing.

Cadillac says it has the German big three in its sights with the Optiq, so how does it stack up?

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2024 Mercedes-Benz E300 Summary

It might not be as tribal as Ford vs Holden, but there’s a rivalry between BMW and Mercedes-Benz that occasionally becomes more obvious - the launch of the new Mercedes E-Class only months after the BMW 5 Series being one of those times.

But Mercedes has done something different. Instead of multiple variants and electric cars under the E-Class banner, Australia gets just one, the E300.

Is it enough to tackle the big Bavarian sedan in the sales race? We attended the Australian launch just north of Melbourne to find out.

 

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Deep dive comparison

2026 Cadillac Optiq 2024 Mercedes-Benz E300

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