Fuel consumption of the VAZ 2107: what it depends on and how to reduce it

The most popular “classic”, the VAZ 2107 model, first rolled off the assembly line in 1982. It differed from previous models in its richer equipment, comfort, and modern appearance. The car was equipped with gasoline engines of various sizes with a manual transmission. They are all different:

1. reliability;
2. maintainability;
3. efficiency;
4. long engine life;
5. constructive simplicity.

Due to its high popularity, the car was produced for more than 30 years. To reduce the engine's appetite, injectors began to be installed on the VAZ 2107, which made it possible to significantly reduce fuel consumption by 100 km.

Engine 1.3 with carburetor

The most affordable modification was equipped with a 1.3 engine with 64 horsepower, which accelerated the car to hundreds in 18 seconds and a top speed of 145 km/h. Its fuel consumption is:

• in the city 11.5 l;
• mixed mode 10.5 l;
• on the highway 7.8 liters.

The car is fueled with AI 92 gasoline. Some owners complain about the high fuel consumption of the VAZ 2107 with a carburetor, the reasons for which are incorrect settings of the gasoline supply system. Cleaning and proper adjustment will allow you to bring consumption indicators to the passport standards.

For the special services of the USSR, they produced a version of the 1.3 rotary-piston type engine with 135 horsepower, it has the same gas consumption, but is practically not found. The complexity of the design makes it difficult to operate.

Cost according to reviews

• Ivan, Moscow region. I still drive a 1987 VAZ 2107 with a 1.3 engine and rear wheel drive. The engine pulls decently, is very reliable and does not pay attention to the quality of gasoline. For such a car, fuel consumption is, of course, high - 10 liters all round, but this is a Soviet classic.
• Alexander, Smolensk. I have owned a VAZ 2107 for almost 30 years and don’t want any other car. The 1.3 engine is very reliable, subject to proper care and normal operation. The suspension is adapted to our roads, and rear-wheel drive control is a matter of habit. Consumption fully corresponds to the passport - highway 7 liters of gasoline, if you drive at a speed of 90 km/h, city - 11.
• Vladimir, Ryazan. My father has been driving a 7 for many years and considers it the best car in the world. The 1.3 engine with 64 horsepower is extremely reliable, especially if you don’t drive it too hard, and it does the repairs yourself; spare parts are inexpensive. Average gasoline consumption is 10 liters, which is the optimal indicator.

Questionable fuel saving methods

Sometimes motorists give advice on how you can save on RT, but not all the proposed methods work, and often savings in such ways turn out to be dubious.

1. Reducing the number of idle speeds. It should be noted that idling is far from the most economical mode, and if you measure the CO level with a gas analyzer, then at idle the device will show the emission of harmful impurities in the exhaust gases no less than at medium speeds. In addition, when the idle speed is reduced from 800-900 rpm to 500-600, there is a possibility that the engine will constantly stall when the gas is released.
2. Magnetic activators. On the Internet you can still find advertisements for “miracle” remedies that supposedly reduce fuel consumption when used. The “magic” device only needs to be attached to the fuel line, and the RT will immediately decrease by 20-30%. At the same time, sellers advise not to accelerate sharply or drive at high speeds. In a word, all these activators are pure deception, luring money out of customers’ pockets.
3. The car is coasting. You can get advice from car enthusiasts - when descending from a mountain, engage neutral gear, and in this case the load is reduced, and a lower RT is obtained. It is worth noting that this driving style is unsafe - if the engine stalls, the vacuum brake booster will stop working, braking efficiency will noticeably decrease, which can lead to an emergency.
4. To save money, you need to fill with cheaper gasoline. Such savings are very doubtful. Firstly, the car drives worse on gasoline fuel with a low octane number, and the engine itself may suffer from the quality of the fuel. Secondly, with bad gasoline the fuel consumption becomes higher than with good gasoline, and the difference in the price of fuel in this case is reduced to zero.
5. Adding additives to gasoline. You need to know that manufacturers already add all the necessary fuel additives to the fuel, and all unnecessary additives can only harm the car engine. Experiments with additives can lead to major engine overhauls.

Engine 1.5 with injector

More powerful modifications of the VAZ 2107 were equipped with a 1.5 engine, with powers of 68 and 72 horsepower. These cars were originally produced with carburetors, but over time they were replaced by injectors. With a five-speed manual transmission, the car accelerated to hundreds in 17 seconds, and the maximum speed reached 150 km/h.

Fuel consumption for both trim levels was stated to be similar:

• on city streets 8.9 l;
• in a mixed cycle 8.5 l;
• on the highway 7.4 liters.

Installing an injector made it possible to significantly reduce fuel consumption, but its consumption is also affected by the condition of the injectors, the quality of gasoline and other factors.

Fuel consumption per 100 km – reviews

• Bogdan, Kerch. If you need a simple and reliable car for a novice driver, the VAZ 2107 is an excellent option. Quite comfortable, it forgives mistakes in handling, the 1.5 engine is reliable and elastic, the suspension is perfectly adapted to our roads. You can refuel with any gasoline, no problems are observed in the fuel system. In the city cycle the engine takes 9.5 liters, on the highway you can keep within 7.5.
• Valery, Naberezhnye Chelny. I bought a VAZ 2107 on the secondary market in 2012. This car has absolutely nothing to worry about: the engine can easily digest any gasoline, the suspension feels great on smooth roads and bumps, and the manual transmission does not require maintenance at all. In the city it turns out to be 9.5 liters per hundred, on the highway injection engines are slightly inferior to well-tuned carburetors, mine takes up to 8 liters.
• Alexey, Serpukhov. I consider the obvious advantage of my “Seven” to be reliability and maintainability. As for comfort, here it loses to foreign cars, but I still don’t plan to change it. An excellent option for a summer cottage and countryside holiday. Consumption does not exceed 9 liters in the city, on the highway you can keep within 7.5.

Proper Fuel Saving Techniques

To ensure that the RT is not too large, it is first necessary to monitor the technical condition of the car. Even the condition of the braking system affects increased fuel consumption - if one of the working cylinders is faulty, the car will begin to slow down, and the driving resistance will increase in this case.

It is important to maintain the required tire pressure - when it decreases, resistance also increases, and accordingly, fuel consumption increases by 2-4%, it all depends on how low the tires are. But it’s also not a good idea to overinflate tires - the car starts to drive harshly, and even on a slippery road, the braking distance increases.

If malfunctions appear in the engine or fuel system, you need to carry out diagnostics to find out the cause of the problem. And adjusting the carburetor and setting up the fuel injection system should be trusted to specialists.

Engine 1.6 with injector

Engines with a 1.6 engine, equipped with an injector, first appeared in 2002 and were installed until the VAZ 2107 was discontinued from production. This modification turned out to be very successful, which determined its popularity. With a power of 74 horsepower, the car reached a speed of 155 km/h and accelerated to hundreds in 16 seconds. Gasoline consumption is:

• in traffic 10.7 l;
• on average 9.7 l;
• on a free road 7.7 liters.

Reviews about fuel consumption

• Oleg, Adler. I took the car from scratch in 2003, a VAZ 2107 with a 1.6 engine and an injector. During this time, I drove 300 thousand km, did practically nothing except change the oil and filters. The engine, to my surprise, still does not take oil and consumes 9-10 liters per hundred, as at the very beginning. Among the disadvantages is that the body has begun to peel off, and repairs will have to be made.
• Dmitry, Orel. I took a 2002 model car for a taxi. The 1.6 engine is very reliable, the chassis allows you to drive around the city or go fishing. The salon is quite roomy, it is quite comfortable to sit in it. In suburban driving mode, 8.5 liters are consumed, in the city 12 liters, I’m thinking of switching to gas.
• Gregory, Perm. Injection VAZ 2107, with a 1.6 engine, 2006. I really like the car, it’s practical and reliable, the gearbox shifts gears clearly, the car confidently drives along the highway and in city traffic. The comfort in the cabin is quite enough for me, the average consumption is 9.5 liters.

Model review: VAZ 2104 without embellishment: Salon VAZ-21074

How to reduce fuel consumption of a VAZ 2107 injector It should also be especially noted that on the basis of the VAZ 2104, small-scale production of the VAZ 21043-33 pickup truck with a carrying capacity of more than 300 kilograms was mastered. The VAZ 2104 car was developed by Soviet engineers for the broadest masses of the population, the main tasks that were set for the developers were the ease of assembly and repair of the car, as well as the maximum cost reduction in its manufacture and maintenance.

VAZ 210740 injector technical characteristics The first two models are initially economical, as they produce less fuel due to their size, but are less accepted by the population due to their low power. Constant monitoring of the state of the gasoline ignition system will consume more fuel if the engine is running rough, the lead angle is set incorrectly, or there is a weak spark in the cylinders.

• shapes of the trunk and hood;
• radiator grilles;
• rear lights;
• chrome trim on the bumpers.

Engine 1.6 with carburetor

This modification was produced from 1982 to 2002 after which it was replaced by an injection version. VAZ 2107 in this configuration consumed the same amount of fuel as the injection version, but required regular carburetor adjustments. The deterioration of the quality of the air-fuel mixture led to a sharp increase in fuel consumption and dynamic characteristics.

Real reviews from owners

• Vitaly, Kazan. I took a used Lada 2107 with a 1.6 carburetor engine for work. I had to do a little magic on the body, but there are no complaints about the engine. If necessary, I adjust the carburetor myself to reduce fuel consumption. The car takes up to 12 liters in the city, on the highway you can keep within 7 liters. I fill it with AI 92.
• Stanislav, Petrozavodsk. On occasion I bought a VAZ 2107 made in 1992, the price was very good. I think it was a very good investment, the car is durable, reliable, passable, the 1.6 engine pulls well, the fuel is supplied by a carburetor, which is a clear plus for me. On the highway I use 7 liters, in the city – 9.
• Alexander, Novosibirsk. My “seven” has already covered 250 thousand km. The 1.6 engine with a carburetor works great in extreme heat and severe frost, the car has never failed, the main thing is the correct settings. Fuel consumption corresponds to the passport - 10 in the city, 7 on the highway.

Reasons for overspending

To determine the causes, technicians use a special device - a tester. They check the electronic control unit and sensors. There are several main reasons when fuel consumption may increase:

• Aggressive driving.
• Precipitation on the walls of nozzles, measurement of their flow area.
• Incorrect operation of the sensors.
• The glow number of the spark plugs does not correspond to that stated by the manufacturer.
• The car's air engine is clogged.

Power unit 1.7 with injector

Since 1991, a version with a 1.7 engine with 80 horsepower appeared, which later began to be equipped with an injector. Acceleration to the first hundred in 16 seconds at a maximum speed of 150 kilometers per hour. Thanks to successful settings, excessive fuel consumption was avoided:

• city ​​9 l;
• in mixed mode 8.4 l;
• track 7.5 l.

Reviews about fuel consumption rates

• Konstantin, Volgograd. I bought a VAZ 2107 with a 1.7 engine as a universal option for the city, country house and fishing and was right. The engine pulls well, which makes you feel comfortable on the highway and in the city. During all this time, a problem appeared with the injection seals; they had to be replaced. No more complaints. Consumption is about 8 liters in a circle.
• Denis, Bryansk. I myself work as an auto mechanic and a VAZ 2107 with a 1.7 engine is my conscious choice. This is a very reliable car that practically does not require large investments. All problems can be fixed quickly and cheaply if you have direct hands. Consumption depends on how I drive, on the highway I can manage 7 liters, I get 8-9, but I drive fast.
• Kirill, Magnitogorsk. A very reliable option, suitable for both work and trips out of town. The 1.7 engine feels great in different modes, easily accelerates the car, while the injector is configured in such a way that after reaching the first hundred, the seven simply comes to life, picking up speed without much difficulty and further. Gasoline consumption is around 8 liters.

How to reduce fuel consumption on a VAZ 2107

RT on VAZ cars with a carburetor engine depends on many factors:

• driving style - during fast dynamic driving, gasoline literally “flies down the drain”;
• season - in winter a lot of fuel is spent on warming up the internal combustion engine;
• the serviceability of the power unit - if the engine is running rough, the fuel does not burn completely, consumption increases;
• tire pressure - with poorly inflated wheels, the resistance to movement increases, and accordingly, the RT increases;
• settings, serviceability of the carburetor itself.

To save money on refueling a car, motorists are advised to install gas-cylinder equipment - gas is consumed no less, but the fuel itself costs at least almost half as much, refueling with methane is especially cheap.

It should be noted that converting a car to gas is beneficial only if the car is used regularly and covers at least 30-40 thousand kilometers per year. The thing is that before you can profit from saving on fuel, you first need to recoup the cost of installing the equipment and the gas equipment itself.

Tire pressure

The last reason is one of the most common - low tire pressure. To make it clearer, just lower the wheels of the car and try to push it. Everyone knows that this will be extremely difficult.

The same situation occurs with the engine when it tries to move a car with flat tires. It has to expend more energy, which means it needs more fuel.

Now it’s clear why the VAZ 2107 carburetor has high fuel consumption. The reasons for this phenomenon can be easily eliminated and will not require large expenses. It is enough to monitor the condition of your car.

Statistics

The fuel consumption of a Lada 2107 with an injection engine is perfectly shown by statistics provided by the manufacturer and figures received from car enthusiasts.

Driving in urban conditions should consume only 9.70 liters, but here the figure exceeds 10.25 liters. With a mixed type of driving, the readings from the manufacturer and the car enthusiast practically coincided, the former had a consumption of 8.50 liters, and the latter - from 8.82 liters. However, we see that in practice the consumption is higher.

The passport does not indicate how much gasoline is consumed when driving off-road. Having checked it ourselves, we see that such driving requires more than 9 liters of fuel.