Maruti Brezza Mileage — Real-World Test 2026 | Petrol MT, 6AT & CNG Compared
⛽ Maruti Brezza Real-World Mileage Summary:
🟢 1.5L Petrol MT: 14-16 city / 19-22 highway KMPL
🟢 1.5L Petrol 6AT: 13-15 city / 17-20 highway KMPL
🔵 1.5L CNG (S-CNG): 22-24 city / 25-28 km/kg highway
📊 ARAI Claimed: Petrol MT 20.15 | AT 19.80 | CNG 25.84 km/kg
⛽ Tank Size: 48 Litres (Petrol) | CNG: 55L water capacity
The Brezza's 1.5L K15C engine with mild-hybrid technology is one of the most fuel-efficient naturally aspirated engines in the SUV segment. We tested all three variants — manual, automatic, and CNG — across Delhi traffic jams, expressway cruising, and mixed suburban driving. All tests with AC on, 2 passengers, fuel-station-to-fuel-station measurements.
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1.5L Petrol MT — Real-World Mileage
The 1.5L K15C with Smart Hybrid (103 PS / 137 Nm) + 5-speed manual is the efficiency champion. The mild-hybrid system provides torque assist during acceleration and extends fuel cutoff during deceleration — adding 1-2 KMPL in real-world use.
| Condition | Mileage (KMPL) | Notes |
|---|---|---|
| Heavy City Traffic (10-20 km/h) | 13-14 | Stop-go, AC on full |
| Normal City (25-40 km/h) | 15-16 | Mild hybrid helps significantly |
| Highway Cruising (80-100 km/h) | 19-22 | Sweet spot — 5th gear, 2200 RPM |
| Highway Fast (100-120 km/h) | 16-18 | Engine feels strained above 100 |
| Mixed Driving Average | 15-17 | Best in segment (NA petrol) |
Mileage-Boosting Accessories
TUSA AC/DC Tyre Inflator — Auto Shutoff
Correct tyre pressure (33 PSI) = 2-3 KMPL better mileage. Under-inflated tyres are the #1 mileage killer — check weekly.
Buy on Amazon
NEODRIFT Magnetic Sunshade Set
Reduces parked cabin temp by 10°C+. Less AC blast on restart = 0.5-1 KMPL saved per summer trip.
Buy on Amazon1.5L Petrol 6AT — Real-World Mileage
The 6-speed torque converter automatic (103 PS / 137 Nm) is smooth and refined. Unlike AMTs, it doesn't have head-nod shifts. But the extra weight of the TC unit and slightly higher RPMs reduce efficiency by 1-2 KMPL vs manual.
| Condition | Mileage (KMPL) | Notes |
|---|---|---|
| Heavy City Traffic (10-20 km/h) | 12-13 | TC creep uses more fuel than MT |
| Normal City (25-40 km/h) | 14-15 | Smooth but 1 KMPL less than MT |
| Highway Cruising (80-100 km/h) | 18-20 | 6th gear helps at cruise |
| Highway Fast (100-120 km/h) | 15-17 | Holds gears well at speed |
| Mixed Driving Average | 14-16 | 1-2 KMPL less than MT |
💡 AT vs MT Mileage Gap: The 6AT gives 1-2 KMPL less than manual. Monthly cost difference at 1,200 km: ~₹600-900. Over a year: ₹7,000-10,000. This is negligible compared to the convenience of automatic in city traffic. Don't choose MT just for mileage savings.
1.5L S-CNG — Real-World Mileage
The factory-fitted S-CNG (90 PS / 122 Nm) is the running cost champion. Despite 13 PS less power, the CNG mode delivers exceptional km/kg figures — especially on highway where the lower power doesn't matter much.
| Condition | Mileage (km/kg) | Notes |
|---|---|---|
| Heavy City Traffic (10-20 km/h) | 20-22 | Still incredible for city |
| Normal City (25-40 km/h) | 23-25 | CNG shines in moderate flow |
| Highway Cruising (80-100 km/h) | 26-28 | Low-RPM cruising = peak efficiency |
| Highway Fast (100-120 km/h) | 22-24 | Feels underpowered but still efficient |
| Mixed Driving Average | 23-26 | ₹1.5/km running cost! |
💰 CNG Running Cost: ₹1.5/km (at ₹85/kg CNG, 24 km/kg average). Compare: Petrol costs ₹6.5-7/km. CNG saves ₹5-5.5 per km = ₹6,000-6,600/month at 1,200 km. Over 5 years: ₹3.6-4 lakh saved in fuel alone! Read full CNG guide →
ARAI vs Real-World — The Gap
The 15-25% gap is normal for Indian conditions. Brezza's mild-hybrid helps reduce this gap in city driving — the idle start-stop and torque-assist genuinely work in slow traffic.
Monthly Running Cost Comparison
Assuming 1,200 km/month mixed driving (Aug 2026 — Petrol ₹105/L, CNG ₹85/kg):
| Variant | Avg Mileage | Fuel/Month | Monthly Cost |
|---|---|---|---|
| 1.5 Petrol MT | 16 KMPL | 75 litres | ₹7,875 |
| 1.5 Petrol 6AT | 15 KMPL | 80 litres | ₹8,400 |
| 1.5 S-CNG | 24 km/kg | 50 kg | ₹4,250 |
CNG saves ₹3,600-4,150/month over petrol. Over 5 years: ₹2.16-2.49 lakh — more than covering the ₹50-70K CNG variant premium. CNG break-even: just 12-15 months!
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Tips to Maximize Brezza Mileage
🔧 Tyre Pressure
Keep at 33 PSI all round. Under-inflated by 5 PSI = 2-3 KMPL drop.
🔋 Let Mild Hybrid Work
Don't disable idle start-stop. It saves 0.5-1 KMPL in traffic automatically.
🚗 Shift Early (MT)
Upshift at 2000-2200 RPM. The K15C has enough torque to pull from low RPMs.
🛣️ Highway: 80-90 km/h
Every 10 km/h above 100 costs 2 KMPL. 80-90 in 5th gear is the sweet spot.
❄️ AC at 24°C
18°C vs 24°C costs 1 KMPL. Use recirculation mode in city — cools faster.
⛽ Quality Fuel
Use branded outlets (HP Power/Speed, Indian XtraPremium). Clean fuel = better mileage long-term.
Frequently Asked Questions
What is the real mileage of Maruti Brezza petrol?
The 1.5L petrol MT delivers 14-16 KMPL in city and 19-22 KMPL on highway with AC on. The 6AT gets 1-2 KMPL less. Mixed driving average: MT 15-17 KMPL, AT 14-16 KMPL. The mild-hybrid system adds genuine efficiency in stop-go traffic.
What is Brezza CNG mileage?
Brezza S-CNG delivers 22-24 km/kg in city and 25-28 km/kg on highway. At ₹85/kg CNG price, that's just ₹1.5/km running cost — the cheapest SUV to run in India. CNG range is approximately 300-350 km per fill, plus 48L petrol tank as backup.
Brezza MT or AT — which gives better mileage?
MT gives 1-2 KMPL better in all conditions. But the monthly cost difference is only ₹500-900. The 6-speed torque converter AT is worth it for city convenience — you lose negligible mileage but gain significantly in driving comfort. Don't choose MT purely for mileage reasons.
How does Brezza compare to Nexon in mileage?
Brezza petrol MT (15-17 KMPL) beats Nexon petrol (13-15 KMPL) by 2 KMPL — because Brezza is naturally aspirated (no turbo lag zone) with mild hybrid. But Nexon diesel (17-19 KMPL) beats Brezza petrol. For pure running cost: Brezza CNG (₹1.5/km) destroys everything — even Nexon diesel (₹4.6/km).
What is the tank range of Maruti Brezza?
48-litre tank. Petrol MT: 720-815 km (mixed). AT: 670-770 km (mixed). On pure highway, MT can touch 950-1,050 km on a single tank — among the best in any compact SUV. CNG adds 300-350 km additional range.
Does the mild hybrid actually help mileage?
Yes — genuinely adds 1-2 KMPL. The Smart Hybrid system: (1) Provides torque-assist during acceleration (engine does less work), (2) Extends fuel cutoff during coasting, (3) Idle start-stop cuts engine at traffic signals. In city driving with frequent stops, the benefit is most noticeable. Highway benefit is minimal.
Also read: Brezza On-Road Price | Brezza CNG Guide | Brezza EMI Guide | Brezza vs Nexon
Written by Rajiv Sah
Founder, OnRoadCost & Josh Riders | info@onroadcost.com