Mercedes-Benz C-Class vs Denza B5
A detailed look at how two of Australia's most popular cars compare on price, running costs, safety, and everyday livability.
Specifications and pricing correct at time of publishing. Prices are RRP before on-road costs unless stated otherwise. Always confirm with the manufacturer or dealer before purchasing.
Price Breakdown
The Mercedes-Benz C-Class starts from $76,900 before on-road costs, while the Denza B5 opens at $74,990. That makes the Denza B5 the more affordable entry point by $1,910.
Once you factor in stamp duty, registration, CTP insurance, and dealer delivery, expect to add roughly 8-12% on top of the RRP depending on your state. That puts estimated driveaway prices in the ballpark of $84,590 and $82,489 respectively.
The Denza B5 qualifies for FBT exemption as an electric vehicle, which can dramatically reduce the effective cost for novated lease buyers. The Mercedes-Benz C-Class, as a petrol model, does not qualify.
Over 5 years, the running costs favour the Denza B5 by roughly $8,295 in fuel alone.
Safety Rundown
Both the Mercedes-Benz C-Class and Denza B5 hold a 5-star ANCAP safety rating. Adult occupant protection scored 91% for the Mercedes-Benz C-Class and 86% for the Denza B5.
Where the two diverge is in active safety technology. The Mercedes-Benz C-Class packs more ADAS features with 6 out of 10 key systems fitted, compared to 0 in the Denza B5.
Both include the essentials: core safety systems.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
The Mercedes-Benz C-Class stands out with wireless Apple CarPlay/Android Auto, head-up display, wireless charging, panoramic roof and ambient lighting that you will not find on the Denza B5. The Denza B5 counters with Apple CarPlay. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Mercedes-Benz C-Class uses a Petrol producing 150kW and 300Nm of torque, sent through a automatic to a RWD layout. It covers the 0-100km/h sprint in 7.8 seconds.
The Denza B5 responds with a Petrol Turbo PHEV making 400kW and 760Nm, paired to a 1-speed auto driving all four wheels.
The Denza B5 has the clear power advantage at 400kW vs 150kW. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Mercedes-Benz C-Class measures 4,751mm long on a 2,865mm wheelbase, 137mm shorter than the Denza B5 at 4,888mm (2,800mm wheelbase). The longer wheelbase on the Mercedes-Benz C-Class generally means more rear legroom.
For towing, the Denza B5 leads with a 3,000kg braked capacity vs 1,800kg. That 1,200kg difference matters if you regularly hitch up.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.1m diameter
Average
Based on 11.1m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $1,995/year for the Mercedes-Benz C-Class and $336/year for the Denza B5. That is a $1,659 annual difference in favour of the Denza B5.
Estimated annual total: $1,995 (Mercedes-Benz C-Class) vs $336 (Denza B5). The Denza B5 saves you roughly $1,659 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 5 years / 999,999km (Mercedes-Benz C-Class) vs 6 years / 150,000km (Denza B5). The Denza B5 has longer coverage.
Who Should Buy Which?
Buy the Mercedes-Benz C-Class if: You or prefer Mercedes-Benz's approach to design and ownership experience.
Buy the Denza B5 if: You want the lower entry price, prioritise performance, want lower running costs, value a longer warranty, need stronger towing, or prefer Denza's approach to design and ownership experience.
The Verdict
The Denza B5 takes 4 of 4 key spec categories and comes in at a lower price. The Denza B5 will save you roughly $1,659 a year in fuel. The Denza B5 adds peace of mind with a longer 6-year warranty. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Mercedes-Benz C-Class and Denza B5?
The Denza B5 is the cheapest at $74,990 before on-road costs. That undercuts the Mercedes-Benz C-Class by $1,910.
Which is the most fuel-efficient?
The Mercedes-Benz C-Class uses the least fuel at 7L/100km on the combined cycle.
Which is safest?
They are evenly matched — Mercedes-Benz C-Class and Denza B5 all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which can tow the most?
The Denza B5 has the highest braked towing capacity at 3,000kg.
Which has the best warranty?
The Denza B5 has the longest warranty at 6 years / 150k km.
Which is the most powerful?
The Denza B5 makes the most power at 400kW.
Disclaimer: All information in this comparison was believed to be correct at the time of publishing (20 April 2026). Prices are manufacturer recommended retail prices (RRP) and may vary by state, dealer, and options. Driveaway costs include estimated on-road costs for Victoria. Fuel economy figures are WLTP/ADR combined cycle. Specifications can change without notice. Always verify with the manufacturer before making a purchase decision. CarSorted does not accept payment for recommendations.
Auto-generated from CarSorted's specification data · 20 April 2026
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