Vehicle Overview
Key specifications and features at a glance
Detailed Specifications
Complete technical specifications comparison
Best comparable values are highlighted in green.
Dimensions & Weight
Physical specifications and measurements
Best comparable values are highlighted in green.
Features Comparison
Standard and optional equipment comparison
Safety
Comfort
Interior Exterior
Technology
Pros & Cons
Strengths and weaknesses of each vehicle
BMW 5 Series 520i
Pros
- +Refined long-distance comfort
- +Efficient turbo petrol performance
- +Spacious 520-litre boot
- +Modern premium cabin technology
- +Balanced rear-wheel-drive handling
Cons
- −High Australian purchase price
- −Large size for city parking
- −Options can increase cost
- −Rear seat is not class-leading
- −No all-wheel-drive option
Mercedes-Benz A-Class Mercedes-AMG A 45 S
Pros
- +Exceptional 310kW hot-hatch output
- +Rapid 3.9-second acceleration
- +Advanced 4MATIC+ traction
- +Practical five-door body
- +High-speed stability and braking
Cons
- −Very high Australian price
- −Firm ride quality
- −High fuel consumption
- −Expensive tyres and brakes
- −Limited rear-seat space
Which one should you buy?
Best for Performance: Mercedes-Benz A-Class Mercedes-AMG A 45 S
System power around 310 kW supports a solid performance score.
Best for Value: BMW 5 Series 520i
Boot space relative to list price contributes positively to the value score.
Best for Practicality / Space: BMW 5 Series 520i
Boot and practicality-related dimensions score well for everyday use.
Best Overall: Mercedes-Benz A-Class Mercedes-AMG A 45 S
Leads this comparison on best overall with a score of 57.
Our Recommendation
Choose Mercedes-Benz A-Class Mercedes-AMG A 45 S if: You prioritise performance and responsive power.
Bottom Line: Mercedes-Benz A-Class Mercedes-AMG A 45 S leads on performance, BMW 5 Series 520i leads on value and BMW 5 Series 520i leads on practicality.
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