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Vauxhall Astra vs Kia K4 - Differences and prices compared

Compare performance (225 HP vs 180 HP), boot space and price (25200 £ vs 25700 £ ) at a glance. Find out which car is the better choice for you – Vauxhall Astra or Kia K4?

Vauxhall Astra

Kia K4

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

Astra

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Vauxhall Astra has a minimal advantage in terms of price – it starts at 25200 £ , while the Kia K4 costs 25700 £ . That’s a price difference of around 514 £.

Fuel consumption also shows a difference: Vauxhall Astra manages with 2.20 L and is therefore convincingly more efficient than the Kia K4 with 5.80 L. The difference is about 3.60 L per 100 km.

Astra

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Vauxhall Astra has a a bit edge – offering 225 HP compared to 180 HP. That’s roughly 45 HP more horsepower.

In acceleration from 0 to 100 km/h, the Vauxhall Astra is slightly quicker – completing the sprint in 7.50 s, while the Kia K4 takes 8.40 s. That’s about 0.90 s faster.

There’s also a difference in torque: Vauxhall Astra pulls noticeable stronger with 360 Nm compared to 265 Nm. That’s about 95 Nm difference.

Astra

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In curb weight, Vauxhall Astra is slight lighter – 1341 kg compared to 1415 kg. The difference is around 74 kg.

In terms of boot space, the Kia K4 offers slight more room – 438 L compared to 422 L. That’s a difference of about 16 L.

When it comes to payload, Vauxhall Astra slightly takes the win – 509 kg compared to 455 kg. That’s a difference of about 54 kg.

Who wins the race in the data check?

The Vauxhall Astra 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.

Vauxhall Astra
Kia K4

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £25,200
Astra

Vauxhall Astra

  • Engine Type : Petrol, Diesel, Electric, Petrol MHEV, Plugin Hybrid
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 130 - 225 HP
  • Consumption L/100km : 2.2 - 6 L
  • Consumption kWh/100km : 15.40 kWh
  • Electric Range : 82 - 419 km
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Vauxhall Astra

The Opel Astra strikes a neat balance between everyday practicality and engaging handling, so the daily grind suddenly feels a bit less dull. Inside it's intelligently packaged with modern kit and comfortable seating, making it a very sensible pick for buyers who want a dependable hatchback that doesn't take itself too seriously.

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01_Opel-Astra-518263
05_Opel-Astra-518267
24_Opel-Astra-518297

Kia K4

Kia K4 shakes up the compact-sedan crowd with concept-car looks, a smartly packaged cabin, and the kind of easygoing refinement that makes rush hour feel less like a chore. It blends value, tech, and a dash of attitude, serving up a smooth, confident drive that might have you taking the long way home just to show off those angles.

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Reviews Opel Astra

Reviews Kia K4

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Vauxhall Astra
Kia K4

Costs and Consumption
Price
25200 - 40500 £
Price
25700 - 32800 £
Consumption L/100km
2.2 - 6 L
Consumption L/100km
5.8 - 6.9 L
Consumption kWh/100km
15.40 kWh
Consumption kWh/100km
-
Electric Range
82 - 419 km
Electric Range
-
Battery Capacity
51 kWh
Battery Capacity
-
co2
0 - 135 g/km
co2
132 - 155 g/km
Fuel tank capacity
42 - 52 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
Hatchback
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1341 - 1736 kg
Curb weight
1415 - 1500 kg
Trunk capacity
352 - 422 L
Trunk capacity
328 - 438 L
Length
4374 mm
Length
-
Width
1860 mm
Width
1850 mm
Height
1432 - 1488 mm
Height
-
Max trunk capacity
1268 - 1339 L
Max trunk capacity
-
Payload
414 - 509 kg
Payload
435 - 455 kg

Engine and Performance
Engine Type
Petrol, Diesel, Electric, Petrol MHEV, Plugin Hybrid
Engine Type
Petrol, Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox, Reduction Gearbox, Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
130 - 225 HP
Power HP
115 - 180 HP
Acceleration 0-100km/h
7.5 - 10.6 s
Acceleration 0-100km/h
8.4 - 12.3 s
Max Speed
170 - 235 km/h
Max Speed
-
Torque
230 - 360 Nm
Torque
200 - 265 Nm
Number of Cylinders
3 - 4
Number of Cylinders
3 - 4
Power kW
96 - 165 kW
Power kW
85 - 132 kW
Engine capacity
1199 - 1598 cm3
Engine capacity
998 - 1598 cm3

General
Model Year
2023 - 2025
Model Year
2025
CO2 Efficiency Class
D, A, C, B
CO2 Efficiency Class
D, E
Brand
Vauxhall
Brand
Kia

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What drive types are available for the Vauxhall Astra?

Available configurations include Front-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.