Mercedes-Benz GLB vs Audi Q3
A detailed look at how two of Australia's most popular SUVs 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.
Mercedes-Benz GLB
From $63,900
SUV
Petrol
120kW
6.5 L/100km
5★ ANCAP
570L
Audi Q3
From $61,600
SUV
4-cylinder inline petrol with turbocharging, MHEV technology and Cylinder on Demand (CoD)
110kW
5.7 L/100km
5★ ANCAP
575L
Price Breakdown
The Mercedes-Benz GLB starts from $63,900 before on-road costs, while the Audi Q3 opens at $61,600. That makes the Audi Q3 the more affordable entry point by $2,300.
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 $70,290 and $67,760 respectively.
Over 5 years, the running costs favour the Audi Q3 by roughly $1,140 in fuel alone.
Safety Rundown
Both the Mercedes-Benz GLB and Audi Q3 hold a 5-star ANCAP safety rating. Adult occupant protection scored 92% for the Mercedes-Benz GLB and 87% for the Audi Q3.
Where the two diverge is in active safety technology. The Mercedes-Benz GLB packs more ADAS features with 6 out of 10 key systems fitted, compared to 3 in the Audi Q3.
Both include the essentials: autonomous emergency braking, a reversing camera. Airbag count is 7 in the Mercedes-Benz GLB and 6 in the Audi Q3.
Feature Showdown
The Mercedes-Benz GLB features a 10.3-inch touchscreen, while the Audi Q3 gets a 12.8-inch display. Apple CarPlay and Android Auto are standard across both.
The Mercedes-Benz GLB stands out with wireless Apple CarPlay/Android Auto, wireless charging and heated front seats that you will not find on the Audi Q3. The Audi Q3 counters with Apple CarPlay. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Mercedes-Benz GLB uses a Petrol producing 120kW and 250Nm of torque, sent through a automatic to a FWD layout. It covers the 0-100km/h sprint in 9.4 seconds.
The Audi Q3 responds with a 4-cylinder inline petrol with turbocharging, MHEV technology and Cylinder on Demand (CoD) making 110kW and 250Nm, paired to a 7-speed s tronic driving the front wheels. It gets to 100km/h in 9.1 seconds.
The Mercedes-Benz GLB has the clear power advantage at 120kW vs 110kW. In the real-world sprint, the Audi Q3 is 0.3s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Mercedes-Benz GLB measures 4,634mm long on a 2,829mm wheelbase, 103mm longer than the Audi Q3 at 4,531mm (2,681mm wheelbase). The longer wheelbase on the Mercedes-Benz GLB generally means more rear legroom.
Boot space is 570L in the Mercedes-Benz GLB and 575L in the Audi Q3, giving the Audi Q3 a 5L advantage. The Mercedes-Benz GLB seats 7 vs 5.
For towing, the Mercedes-Benz GLB leads with a 1,600kg braked capacity vs 1,200kg. That 400kg difference matters if you regularly hitch up.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.6m to 11.7m
Based on 11.6m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Based on 11.7m 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 $1,853/year for the Mercedes-Benz GLB and $1,625/year for the Audi Q3. That is a $228 annual difference in favour of the Audi Q3.
Estimated annual total: $1,853 (Mercedes-Benz GLB) vs $1,625 (Audi Q3). The Audi Q3 saves you roughly $228 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 5 years / 999,999km (Mercedes-Benz GLB) vs 5 years / 999,999km (Audi Q3). Both match on warranty length.
Who Should Buy Which?
Buy the Mercedes-Benz GLB if: You prioritise performance, need stronger towing, or prefer Mercedes-Benz's approach to design and ownership experience.
Buy the Audi Q3 if: You want the lower entry price, need more boot space, want lower running costs, or prefer Audi's approach to design and ownership experience.
The Verdict
The Audi Q3 takes 4 of 6 key spec categories and comes in at a lower price. The Audi Q3 will save you roughly $228 a year in fuel. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Mercedes-Benz GLB and Audi Q3?
The Audi Q3 is the cheapest at $61,600 before on-road costs. That undercuts the Mercedes-Benz GLB by $2,300.
Which is the most fuel-efficient?
The Audi Q3 uses the least fuel at 5.7L/100km on the combined cycle.
Which is safest?
They are evenly matched — Mercedes-Benz GLB and Audi Q3 all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which has the most boot space?
The Audi Q3 has the largest boot at 575L.
Which can tow the most?
The Mercedes-Benz GLB has the highest braked towing capacity at 1,600kg.
Which is the most powerful?
The Mercedes-Benz GLB makes the most power at 120kW. The Audi Q3 is quickest to 100km/h in 9.1s.
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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