Best Fuel-Efficient Used Cars in NZ
With fuel prices where they are, the running cost of a car matters as much as the price on the windscreen. Choosing one of the most fuel-efficient used cars in NZ can save you hundreds of dollars a year, and the good news is that many of the best options are affordable, reliable Japanese imports.
This guide compares the fuel economy of popular used cars in New Zealand, explains what the figures really mean, and helps you pick the right economical car for how you drive.
The Short Answer
The most fuel-efficient used cars in NZ are small petrol hybrids, led by the Toyota Yaris Hybrid, Toyota Aqua, Toyota Prius and Honda Fit Hybrid. Most are rated at around 3.3 to 4.2 L/100km.
If you want to keep the purchase price down, a small petrol hatch like the Suzuki Swift is still very economical at around 5 L/100km. For families, the seven-seat Prius Alpha combines space with hybrid economy.
Fuel Economy Compared
| Model | Type | Fuel use | Figure |
|---|---|---|---|
| Toyota Yaris Hybrid (2020 on) | Hybrid hatch | 3.3 L/100km | Toyota claim |
| Mazda Axela Hybrid | Hybrid hatch / sedan | 3.2 L/100km | Japanese test cycle |
| Toyota Prius Alpha (Prius V) | 7-seat hybrid wagon | Just over 3.8 L/100km | Japanese spec, 2014 |
| Toyota Aqua | Hybrid hatch | 3.9 L/100km | AA |
| Toyota Prius (2012 to 2015) | Hybrid hatch | 3.9 L/100km | AA |
| Lexus CT200h | Hybrid hatch | 4.1 L/100km | AA |
| Toyota Corolla Hybrid (2019 on) | Hybrid hatch | 4.2 L/100km | Toyota claim |
| Honda Fit Hybrid (GP5) | Hybrid hatch | 3.7 to 5.0 L/100km | AA |
| Suzuki Swift (2010 to 2017) | Petrol hatch | 5.1 L/100km | Claimed |
Official or claimed combined figures from the AA, Trade Me Motors and manufacturer data. Test methods differ, and Japanese test figures are usually optimistic, so expect real-world use to be higher. Your driving, the car's condition and how far you travel all affect the result.
What Makes a Car Fuel Efficient
Hybrid System
An electric motor helps at low speeds and recovers energy when braking, so the petrol engine works less around town.
Small, Light Body
Less weight takes less energy to move. Small hatchbacks are naturally thrifty.
Engine Size
A smaller engine generally uses less fuel, especially in stop-start city driving.
How You Drive
Smooth acceleration and steady speeds make a bigger difference than most people expect.
Tyres and Weight
Under-inflated tyres, heavy loads and roof racks all push fuel use up.
Servicing
A well-maintained engine and, in a hybrid, a healthy battery keep economy close to new.
Best Picks by How You Drive
- City driving: the Toyota Aqua and Yaris Hybrid suit short trips and stop-start traffic, where hybrids save the most.
- Commuting: the Toyota Prius and Corolla Hybrid are comfortable on the motorway and still very economical.
- Families: the Toyota Prius Alpha gives you up to seven seats with hybrid running costs.
- Tight budget: a Suzuki Swift or an older Honda Fit Hybrid keeps both the purchase price and fuel bills low.
- A touch of comfort: the Lexus CT200h shares Prius hybrid technology with a nicer interior.
Hybrids save the most fuel in towns and cities. If most of your driving is long, steady open-road trips, the gap between a hybrid and an efficient small petrol car is smaller.
What Better Economy Really Saves
As a guide, a car using 4 L/100km instead of 6 L/100km saves about $1,083 a year over 15,000km, with 91 petrol at $3.61 a litre (the national average in mid October 2026). Drive more and the saving grows.
Petrol hybrids that cannot be plugged in pay fuel tax at the pump like any petrol car, so there are no road user charges to add. Plug-in hybrids do pay road user charges, at a lower rate than diesel and electric vehicles.
Our guide on whether a hybrid is worth it works through the numbers in more detail, and our guide to the real cost of owning a used car covers servicing, WoF, rego and insurance too.
Buying an Economical Used Car in Three Steps
Know Your Driving
Work out how far you drive and how much is city versus open road.
Check the Car
Look at the service history and, for hybrids, the battery health.
Test Drive It
Watch the fuel economy display and see how smoothly the car drives.
Check the Hybrid Battery
A hybrid is only economical if its battery is healthy. Ask about the battery's history, look for warning lights, and have it checked if you are unsure. Our guide to hybrid battery health explains what to look for, and our best used hybrids guide compares the most popular models in more detail.
Fuel-Efficient Cars in Hamilton
Economical Japanese imports make up a big part of our yard, from Aquas and Prius to small petrol hatchbacks. Tell us how you drive and your budget, and we will point you to the cars that will cost you least to run.
Visit us at 20 Arthur Porter Drive in Hamilton, open seven days, or start online: browse our current stock and apply for finance. Not local? We offer delivery anywhere in New Zealand.
Frequently Asked Questions
- Small Toyota hybrids are among the most economical used cars you can buy. The Toyota Yaris Hybrid (2020 on) claims 3.3 L/100km, and the Toyota Aqua and 2012 to 2015 Prius are rated at around 3.9 L/100km.
- Usually, yes, especially around town. A small hybrid like the Aqua is rated at around 3.9 L/100km, while a small petrol hatch like the Suzuki Swift claims around 5.1 L/100km. On long open-road trips the gap narrows.
- The AA quotes around 3.9 L/100km for the Aqua, depending on how it is driven. Urban driving with plenty of braking suits a hybrid best.
- It is close. The AA rates the GP5 Fit Hybrid at 3.7 to 5.0 L/100km combined, and in its own testing the Fit used a little more fuel than the Aqua on the same route.
- No. Petrol hybrids that cannot be plugged in pay fuel tax at the pump, not road user charges. Plug-in hybrids do pay road user charges, at a lower rate than diesel and electric vehicles.
- They are best used to compare cars, not as a promise. Test methods differ, and Japanese test figures are often lower than what you will see on New Zealand roads, so expect your real-world use to be higher.
- The Toyota Prius Alpha, sold new in NZ as the Prius V, is a popular choice. It seats up to seven and is rated at just over 3.8 L/100km on the Japanese test.
- Keep your tyres at the right pressure, remove roof racks when you are not using them, drive smoothly, and keep up with servicing. These simple habits can make a noticeable difference.
