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XPeng G9 vs Cadillac OPTIQ comparison

Compare performance (575 HP vs 304 HP), boot space and price (51,100 £ vs 55,700 £ ) at a glance. Find out which car is the better choice for you – XPeng G9 or Cadillac OPTIQ?

XPeng G9 vs Cadillac OPTIQ: Key differences

XPeng G9

4.8 (7 Reviews)
rate
  • only slightly cheaper
  • substantially more power
  • very slightly more efficient
  • noticeably more electric range
  • significantly quicker 0–100 km/h
  • marginally lighter
  • clearly more trunk space
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Cadillac OPTIQ

3.7 (1 Reviews)
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

G9

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

XPeng G9 is only slightly cheaper – starting at 51,100 £ , while the Cadillac OPTIQ costs 55,700 £ . That’s a price difference of around 4,629 £.

In terms of energy consumption, the XPeng G9 is very slightly more efficient: consuming 18.4 kWh/100km compared to 19.9 kWh/100km for the Cadillac OPTIQ. That’s a difference of about 1.5 kWh/100km.

As for electric range, the XPeng G9 offers noticeably more range – reaching up to 585 km, about 160 km more than the Cadillac OPTIQ.

G9

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the XPeng G9 offers substantially more power – delivering 575 HP compared to 304 HP. That’s roughly 271 HP more horsepower.

When accelerating from 0 to 100 km/h, the XPeng G9 is significantly quicker – completing the sprint in 4.2 s, while the Cadillac OPTIQ takes 6.3 s. That’s about 2.1 s quicker.

There’s also a difference in torque: the XPeng G9 delivers noticeably more torque with 695 Nm compared to 480 Nm. That’s about 215 Nm more.

G9

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, XPeng G9 is marginally lighter – 2,210 kg compared to 2,376 kg. The difference is around 166 kg.

Looking at boot space, the XPeng G9 offers clearly more boot space – 660 L compared to 443 L. That’s a difference of about 217 L.

When it comes to payload, the Cadillac OPTIQ carries only slightly more – 524 kg compared to 520 kg. That’s a difference of about 4 kg.

Who wins the race in the data check?

The XPeng G9 holds a decisive overall lead in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £51,100
G9

XPeng G9

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 351 - 575 HP
  • Consumption kWh/100km 18.4 - 20.1 kWh/100km
  • Electric Range 502 - 585 km
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Frequently compared as well

XPeng G9
ZEEKR 7X
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The XPeng G9 and Zeekr 7X are two high-end electric SUVs from Chinese brands that compete on range, tech and comfort while aiming to deliver strong performance. This comparison focuses on real-world range, charging speed, driving dynamics, interior quality and ownership costs to help you decide …
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Cadillac OPTIQ

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

XPeng G9

The XPeng G9 is a spacious, tech-forward electric SUV that pairs a calm, refined ride with responsive performance and a high-quality, minimalist cabin. With strong emphasis on connectivity and advanced driving assistance, it’s a compelling choice if you want modern EV features and generous practicality without a legacy badge.

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Reviews XPeng G9

4.8 (7 Reviews)
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Walter
19 Jun 2026, 02:29:05

G9 Performance — currently the best electric car, with outstanding software and driving comfort. It stands up to any comparison with top models from Mercedes, BMW and Audi. Seven-year warranty and automatic updates.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Kiano Wotler
29 May 2026, 17:22:07

Very nice smooth riding car

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Oski
11 May 2026, 19:15:12

I drove the Mercedes EQS and the Xpeng G9 Performance. The Xpeng is an ultra-modern, voice-controlled car with excellent build quality, a superior sound system and air suspension. I now understand why VW invested €700 million to buy a 5% stake in Xpeng. VW cars in China now run on Xpeng technology.

How do you mainly use this car? (optional): Company car / Business
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Rob
1 Jan 2026, 18:43:08

I've seen and driven both cars. The XPeng 9 makes more of an impression. The Zeekr 7x's interior color is limited to black — a real shame! For a nicer contrast you'll have to have it wrapped in a different color. But that's a matter of taste! Otherwise the cars are comparable, noting that the XPeng is a proper SUV while the Zeekr 7x is a crossover.

How do you mainly use this car? (optional): Leisure / Weekend driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

Cadillac OPTIQ

The Cadillac Optiq is a chic, compact electric SUV that brings the brand’s bold styling, hushed refinement, and confident punch to a more attainable size. With a calm, composed ride, a tech-rich cabin, and the brand’s signature light show outside, it feels like an urban-friendly gateway to true American luxury without losing the drama or the practicality buyers need.

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Reviews Cadillac OPTIQ

3.7 (1 Reviews)
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No reviews yet. Share your experience and help others decide.

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Cadillac OPTIQ

Costs and Consumption
Price
51,100 - 62,200 £
Price
55,700 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
18.4 - 20.1 kWh/100km
Consumption kWh/100km
19.9 kWh/100km
Electric Range
502 - 585 km
Electric Range
425 km
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,210 - 2,395 kg
Curb weight
2,376 kg
Trunk capacity
660 L
Trunk capacity
443 L
Length
-
Length
-
Width
1,937 mm
Width
1,912 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 520 kg
Payload
524 kg

Engine and Performance
Engine Type
Electric
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
351 - 575 HP
Power HP
304 HP
Acceleration 0-100km/h
4.2 - 6.6 s
Acceleration 0-100km/h
6.3 s
Max Speed
-
Max Speed
-
Torque
465 - 695 Nm
Torque
480 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
258 - 423 kW
Power kW
224 kW
Engine capacity
-
Engine capacity
-

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
XPeng
Brand
Cadillac
Is the XPeng G9 offered with different drivetrains?

Available configurations include Rear-Wheel Drive or All-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.