Nissan AD is a legendary Japanese SUV that is still in demand on the secondary market. But before buying, many people ask: how much does this “tank” actually eat?? Official figures from the manufacturer often diverge from reality, especially when it comes to used cars. In this article we will analyze real fuel consumption Nissan AD per 100 km - by engine, fuel type and operating conditions.

We analyzed the owners' data, technical characteristics, and even took into account the features of different generations (WD21 and R50). You will learn how save 10-15% fuel without investment, what "sores" of engines affect appetite, and why the same AD can “eat” both 12 and 20 liters. Spoiler: it all depends not only on driving style, but also on fuel system condition And gear ratios.

Official vs real consumption: why the numbers don’t match

The manufacturer declares for Nissan AD with gasoline engine consumption 10-13 l/100 km in a mixed cycle. For diesel versions - approx. 8-10 l/100 km. But the owners in the reviews write completely different numbers: from 14 to 22 liters in the city and 10-15 on the highway. What's the catch?

The point is measurement technique: Factory tests are carried out under ideal conditions - on a flat road, with the air conditioning turned off, in a new car. Reality includes:

  • 🚦 Traffic jams — every hour of idle time “eats” 1-1.5 liters of gasoline.
  • 🏔️ Relief — climbs increase the load on the engine, especially on AD with all-wheel drive.
  • ⚙️ Wear — over time, the injectors become clogged, the sensors lie, and the transmission begins to become “dull.”
  • ❄️ Climate — in winter, consumption increases by 15-20% due to heating and thick oil.

For example, Nissan AD WD21 with motor TD27 (diesel) according to the passport consumes 9.5 l/100 km, but in Siberian frosts the owners record 14-16 liters. Gasoline RB20E in the city it easily drinks 18-20 liters if you drive aggressively or with a faulty lambda probe.

⚠️ Attention: If your AD suddenly began to “eat” 30-40% more than usual - check mass air flow sensor (MAF) And EGR valve. These units often fail after 150-200 thousand km.
📊 What engine do you have in your Nissan AD?
  • RB20E (petrol)
  • TD27 (diesel)
  • RB25 (petrol)
  • Other gasoline
  • Other diesel

Fuel consumption by engine: table with real data

We collected statistics from the owners Nissan AD (200+ reviews) and averaged the indicators. The figures are for cars in in good condition, without serious modifications. If your consumption is very different, look for the reason in technical problems.

Engine Fuel type City (l/100 km) Route (l/100 km) Mixed (l/100 km)
RB20E Gasoline AI-92 16-18 10-12 13-15
RB25DE Gasoline AI-95 18-20 11-13 14-16
TD27 Diesel 12-14 8-9 10-11
TD27T Diesel with turbine 13-15 9-10 11-12
KA24E Gasoline AI-92 15-17 9-11 12-14

Please note: diesel AD more economical, but demanding on fuel quality. One refueling with “scorched” diesel can disable injection pump (repair cost - from 50 thousand rubles). Gasoline engines are less demanding, but their consumption greatly depends on ignition system status And catalyst.

Interesting fact: Nissan AD R50 (latest generation) with motor RB25DE paired with automatic transmission spends 10-15% more than with a “mechanics”. This is due to torque converter, which “eats” part of the power.

💡

If you have AD with an automatic transmission, try driving in Overdrive (O/D) OFF at speeds up to 80 km/h - this will reduce consumption by 1-2 liters.

5 reasons why your Nissan AD began to “eat” more

A sharp increase in appetite is a signal of a malfunction. Here are the top 5 problems that owners AD often missed:

  1. Clogged injectors — the fuel is sprayed unevenly, some of it burns inefficiently. Symptom: the engine “troits” at idle.
  2. Faulty thermostat — if the engine does not warm up to operating temperature (90°C), the control unit over-enriches the mixture. Check coolant temperature sensor (DTOZH).
  3. Worn spark plugs or high-voltage wires - weak spark = incomplete combustion of fuel. On AD with mileage >100 thousand km, spark plugs need to be changed every 30 thousand km.
  4. Air leak — cracks in pipes or gaskets lead to a lean mixture. The engine compensates for this by increasing the fuel supply.
  5. Dirty air filter - reduces power and forces the driver to press harder on the gas. On AD The filter is changed every 15-20 thousand km (more often in dusty regions).

Another common problem is incorrect wheel alignment angles. If the wheel alignment is not adjusted, rolling resistance increases and so does fuel consumption. On AD with all-wheel drive this is especially critical due to the weight of the car.

⚠️ Attention: If after changing the oil fuel consumption has increased by 1-2 liters, check new oil viscosity. Too thick (for example, 15W-40 instead of 5W-30) increases the load on the engine.

Measure the fuel pressure (standard for AD — 2.5-3.0 kg/cm²)

Diagnose errors using OBD-II (codes P0171/P0172 - lean/rich mixture)

Inspect the exhaust for black smoke (signal of over-rich mixture)

Check the compression in the cylinders (the norm is 12-13 kg/cm²)

-->

How to reduce fuel consumption by 10-15%: proven methods

Even serviceable Nissan AD can be done more economically. Here 7 methods that workthat do not require investment (or cost pennies):

  • 🚗 Smooth acceleration — sharp starts increase consumption by 20-25%. Optimal pace: pick up speed in 10-12 seconds.
  • 🛣️ Cruising speed 80-90 km/h — at this speed the aerodynamic drag is minimal. On AD with a manual transmission, engage 5th gear already at 70 km/h.
  • 🔧 Regularly cleaning the throttle body — contamination leads to “stuck” speed and excessive consumption. Cleaning is done every 50 thousand km.
  • 🌡️ Warm up no more than 2-3 minutes - modern engines do not need long warm-up. It is enough to wait until the idle speed drops to 800-900.
  • 🛢️ Fuel with an octane number not lower than recommended - for RB25DE this is AI-95, for RB20E - AI-92. “Savings” at 92 for the RB25 will result in an increase in consumption by 5-7%.
  • 🔋 Disabling consumers — air conditioning adds 1-1.5 l/100 km, heated windows — 0.5 l/100 km. Use them only when necessary.
  • 🎛️ Adjusting tire pressure — underinflated wheels (0.5 atm below normal) increase consumption by 3-5%. For AD optimal pressure: 2.2 atm front, 2.4 atm rear.

For diesel AD there is an additional life hack: use antigel additives in winter. They improve fuel atomization and reduce consumption by 2-3%. The main thing is not to buy cheap fakes (we recommend Liqui Moly Diesel Fliess-Fit or Castrol TDA).

Fuel Economy Myths That Don't Work on AD

1. "Coasting with the gear out" - on AD with an injector this has no effect, but on a diesel engine it can damage the turbine (if there is one). 2. "Use of magnetic fuel activators" - independent tests show that they do not affect consumption. 3. "Switching to synthetic oil with a viscosity of 0W-20" - for old engines AD This is fraught with oil starvation and increased wear.

The influence of transmission and drive on engine appetite

Nissan AD was produced with three types of transmissions: mechanics, automatic And transfer case with reduction gear. Each of them affects consumption in its own way:

  • ⚙️ Manual transmission - the most economical. With proper switching (early shift to higher gear), you can achieve 12-14 l/100 km even in the city.
  • 🔄 Automatic transmission - adds 10-15% to consumption due to losses in the torque converter. On the highway the difference is less (1-2 l/100 km), but in traffic jams the automatic “eats” the extra 3-4 liters.
  • 4✖️ All-wheel drive (Part-Time) — in normal mode (2WD) the consumption does not differ from a single-wheel drive. But when all-wheel drive (4WD) is turned on, the appetite increases by 20-25% due to the increased load on the transmission.

Important nuance: on AD with transfer case many owners forget turn off downshift after off-road. Driving at a "lower setting" on asphalt increases consumption to 25-30 l/100 km!

Another factor - differential lock. On AD with rear locking (optional), turning it on adds 1-2 liters per hundred. Use it only when really necessary (dirt, snow, sand).

💡

On a Nissan AD with an automatic transmission, fuel consumption directly depends on driving style. Sharp accelerations force the box to shift later, which “eats” an extra 2-3 liters per 100 km.

Winter vs summer consumption: how the season affects appetite

During the cold season Nissan AD consumes 15-20% more fuel. Here are the main reasons:

  • ❄️ Warming up the engine — 5-10 minutes idling = 0.3-0.5 liters of fuel. In a month it accumulates 10-15 liters.
  • 🔋 Thick oil — in cold weather it pumps worse, increasing the load on the starter and engine.
  • 🚘 Winter tires — soft tires with deep tread increase rolling resistance by 5-7%.
  • 🔥 Heaters — stove, heated seats and windows add 1-2 l/100 km.
  • ⛽ Bad fuel — in winter, gas stations often dilute gasoline, reducing its calorie content.

How to reduce winter losses?

  1. Use preheater (For example, Webasto). 10 minutes of operation at 220V will save 0.5 liters of gasoline compared to warming up at idle.
  2. Refuel at trusted gas stations (for example, Gazpromneft or Lukoil). Avoid small gas stations with questionable fuel.
  3. Insulate the engine car blanket (costs 1-2 thousand rubles). It retains heat for 2-3 hours, reducing warm-up time.
  4. Follow tire pressure — in winter it drops by 0.2-0.3 atm due to the cold. Inflate your tires every 2 weeks.

In summer, consumption may also increase due to air conditioner (+1-1.5 l/100 km) and open windows at speeds above 80 km/h (aerodynamic drag increases). Optimal balance: windows are closed, air conditioning is on 2-3 steps.

Owner reviews: real consumption figures

We interviewed the owners Nissan AD different years and collected typical indicators. Important: all cars are in good condition, without major tuning.

Andrey, Moscow, AD R50 1998, RB25DE, manual transmission, all-wheel drive:

“In the city in the summer - 14-15 l/100 km, in the winter - 16-17. On the highway at 90-100 km/h I keep within 10-11. The main thing is not to drive above 110, otherwise the consumption jumps to 13-14. The car runs on gas (4th generation LPG), with methane it is 2 times cheaper."

Sergey, Krasnoyarsk, AD WD21 1992, TD27, manual transmission:

"Diesel at -30° is hell. Warm up for 15 minutes, consumption 18-20 l/100 km. In summer 10-11 l. I fill in antigel Liqui Moly and I change the fuel filter every 10 thousand km - otherwise the injectors become clogged. On the highway at 80 km/h you can achieve 8.5 liters."

Igor, St. Petersburg, AD R50 2000, RB20E, automatic transmission:

"The automatic machine eats up a lot - in traffic jams it takes 18-20 liters. The only thing that saves us is driving in Eco (smooth throttle, early shifts). In the summer, at the dacha (highway + a little city) it comes out to 13-14 liters. If you turn on Overdrive, at a speed of 90 km/h the consumption drops to 11 liters."

General trend: owners AD with diesel We are pleased with the efficiency, but criticize the capriciousness of fuel. Gasoline versions are praised for their reliability, but consumption is called the main disadvantage. Those who switched to gas, note the payback period for installing gas equipment in 1.5-2 years.

💡

Owners of Nissan AD with mileage >200 thousand km note that fuel consumption gradually increases by 0.5-1 l/100 km every 50 thousand km. This is due to natural wear and tear on the engine and transmission.

FAQ: answers to frequently asked questions about fuel consumption

Is it possible to reduce consumption by reflashing the ECU?

Yes, but the effect depends on the original firmware. On AD with motor RB25DE Chip tuning can reduce consumption by 5-10%, but only if the car was previously running on “stifled” stock firmware. Important: after flashing, you must use fuel with an octane rating of at least 98, otherwise the engine will begin to detonate.

The cost of the service is 10-15 thousand rubles. It will pay for itself in 20-30 thousand km with active use.

What kind of gasoline should I put in Nissan AD: 92 or 95?

Depends on the engine:

  • RB20E — 92nd is officially allowed, but 95th is better (less soot).
  • RB25DE - only 95th or 98th. At 92 there will be detonation and increased consumption.
  • KA24E — 92nd, but the quality should be stable (better than refill Rosneft or Gazpromneft).

Experiments with octane number AD are fraught problems with the catalyst And oxygen sensors.

How much does Nissan AD consume on gas?

Switching to gas (propane-butane) gives savings of 30-40%, but there are nuances:

  • Gas consumption is 10-15% higher than gasoline (for example, if gasoline is 15 l/100 km, then gas is 16-17 l).
  • Power drops by 5-10% (especially noticeable on RB25DE).
  • In winter, gas consumption increases by 15-20% due to cold starts on gasoline.

HBO payback per AD — 1.5-2 years with a mileage of 20 thousand km/year. It is better to install 4th generation systems (for example, Lovato or BRC).

Why did the consumption increase after replacing the timing chain?

This is a typical problem Nissan AD with motors RB20E/RB25DE. Reasons:

  1. Incorrect installation valve timing (marks are knocked down).
  2. Wear chain tensioner (if they delivered a low-quality one).
  3. Damage chain dampers (they must be changed along with the chain).

Solution: check ignition timing And compression. If the marks are knocked down, consumption can increase by 20-30%.

What is the fuel consumption of Nissan AD with turbine (RB25DET)?

Turbocharged versions (RB25DET) spend 20-25% more than standard. Real numbers:

  • City - 18-22 l/100 km.
  • Highway - 12-14 l/100 km.
  • Combined cycle - 15-17 l/100 km.

Reason - increased boost pressure (0.7-0.9 bar) and a rich mixture to protect against detonation. On the stock turbine (Garrett T25) consumption can be reduced to 16-18 liters in the city if you drive without “straining”.