Mazda cx 7 engines

Mazda cx 7 belongs to the SUV class and is a mid-size Japanese car that includes five seats.

More than 7 years have passed since the creation of the Mazda cx 10. However, at the official level, he was presented in January 2006 at a car show in Los Angeles.

The foundation for its creation was the concept of this crossover called the MX-Crossport, which was made public a little earlier, in 2005. The start of mass production of the Mazda CX 7 took place in the spring of 2006, at the concern's car plant in Hiroshima. It is worth noting that the crossover aroused great interest among drivers who like serious technology.

For reference! Iwao Koizumi, chief designer of Mazda, claims that he came up with the appearance of this crossover in a fitness center, which emphasizes the exterior of the car. After all, the design of the CX-7 turned out to be sporty-aggressive both inside and out!

Four years later, the model was restyled, the main change of which was the appearance of a front-wheel drive layout of the car. The Mazda cx 7 was discontinued in 2012, just six years after its introduction. The company's management decided to end the production of this crossover, which is very popular, due to the release of a newer model.

For reference! The predecessor of the Mazda cx 7 is the famous Mazda Tribute, and its successor is the newer crossover Mazda CX-5!

It's no secret that the crossover was developed on a completely new platform, which was designed specifically for this car.

Despite this, a significant part of the units, components and mechanisms of the Mazda cx 7 are borrowed components of other models from Mazda. For example, the front suspension is completely taken from the Mazda MPV minivan, and the developers decided to take the suspension from the Mazda 3, which has undergone minor modifications, as the basis for the rear.

The all-wheel drive transmission, which was also equipped with the presented crossover, was inherited from the Mazda 6 MPS. In addition, the 6th generation Mazda gave the owners of the CX-7 a derated engine with a capacity of 238 hp. The gearbox is a six-speed "Active matic" automatic unit, which has a manual shift function.

It should also be noted that the Mazda cx-7 car has a security system that includes the following elements:

1. Six airbags;
2. Dynamic Stability Control (DSC);
3. Anti-lock braking system (ABS);
4. Emergency Brake Assist (EBA);
5. Traction control system (TSC).

Specifications Mazda cx 7

Before describing the technical characteristics of this car, it must be clarified that there are different modifications depending on the region of delivery, each of which has a standard and restyled version:

1. Russia;
2. Japan;
3. Europe;
4. USA.

Below is a table that shows the technical characteristics of the engines that the crossover was equipped with:

Russia	Japan	Europe	USA
Engine make	L5-VE L3-VDT	L3-VDT	MZR-CD R2AA MZR SOME L3-VDT	L5-VE L3-VDT
Engine volume, l	2.5 2.3	2.3	2.2 2.3	2.5 2.3
Power, HP	161-170 238-260	238-260	150 – 185 238 – 260	161-170 238-260
Torque, N * m	226 380	380	400 380	226 380
Fuel used	AI-95 AI-98	AI-95, AI-98	Diesel fuel; AI-95, AI-98	AI-95 AI-98
Fuel consumption, l / 100 km	7.9 – 11.8 9.7 – 14.7	8.9 – 11.5	5.6 – 7.5 9.7 – 14.7	7.9 – 11.8 9.7 – 14.7
engine's type	Petrol, in-line, 4-cylinder; Petrol, in-line, 4-cylinder turbocharged	Petrol, in-line, 4-cylinder turbocharged	Diesel, in-line, 4-cylinder turbocharged; Petrol, in-line, 4-cylinder turbocharged	Petrol, in-line, 4-cylinder; Petrol, in-line, 4-cylinder turbocharged
Additional information about the engine	Distributive fuel injection; Direct fuel injection, DOHC	Direct fuel injection, DOHC	Direct fuel injection Common-rail, DOHC; Direct fuel injection, DOHC	Distributive fuel injection; Direct fuel injection, DOHC
Cylinder diameter, mm	89 – 100 87.5	87.5	86 87.5	89 – 100 87.5
The piston stroke, mm	94 – 100 94	94	94	94 – 100

Based on the above table, we can safely say that the Mazda CX-7 engine range does not have a wide range of choices. There are only 3 ICE options to choose from - a diesel power unit and two gasoline ones.

The first is called the MZR-CD R2AA, has a displacement of 2,2 liters and is equipped with a turbocharger, which allows you to produce power of 170 hp, acceleration from 0 to 100 km / h takes 11,3 seconds, and the average fuel consumption is 7,5, XNUMX liters. Below is a photo of this engine in the engine compartment:

For reference! On the CX-7 crossovers, which were assembled for the European market, an exhaust gas treatment system (SCR) was additionally installed!

The 3-liter L2,3-VDT gasoline engine was inherited from the CX-7 from the Mazda 6 MPS. It included direct fuel injection, turbocharging and an intercooler. This motor was installed both on cars with a manual transmission, which made it possible to obtain a power of 260 hp, and with a six-speed automatic transmission, as a result of which the power was reduced to 238 hp.

It must be emphasized that both versions of this power unit are not economical, because according to passport data, fuel consumption reaches 11 - 11,5 l / 100 km in the combined cycle. However, due to the presence of a turbine, the CX-7 crossover has good acceleration dynamics - 8,3 seconds to 100 km / h. Below is the L3-VDT in one of the Japanese catalogs:

The last of the two gasoline engines, with a displacement of 2,5 liters, was installed on the post-styled versions of the Mazda cx 7. This engine differs in that it does not have a turbine and is considered an atmospheric power unit. Its power is 161 hp, acceleration to 100 km / h takes 10,3 seconds according to passport data, and fuel consumption in the combined cycle.

The engine is called L5-VE and works in conjunction with a five-speed automatic transmission. It is found in front-wheel drive models of the CX-7, which are intended for the American market. There is also a Russian version of the L5-VE internal combustion engine, which works in conjunction with a mechanical transmission and allows you to reach a power of 170 hp.

Which engine to choose Mazda CX-7

When choosing an engine, first of all, you should consider your own preferences. For example, for one driver, an important parameter is the dynamics of the car, its maximum speed. For these purposes, the L3-VDT turbocharged engine is best suited. However, it should be understood that the supercharger not only adds power, but also reduces the life of the engine.

In addition, according to the owners of this power unit, very often there are problems with the turbine and engine oil starvation. Fuel consumption is also an important parameter, because turbocharging significantly increases it.

Naturally, for most drivers, the reliability of the engine, its economy and resource are more important. For these purposes, the naturally aspirated L5-VE engine, which has a working volume of 2,5 liters, is best suited.

Unfortunately, the MZR-CD R2AA diesel engine, which is installed on the European versions of the CX-7, is extremely rare in our country. However, if you are lucky enough to find such an instance, then it will be a good alternative to gasoline aspirated. Diesel engines have greater efficiency and operational life, and also have greater traction.

Which engine is most popular among Mazda CX-7 owners

In our country, almost all Mazda CX-7 cars are equipped with a gasoline turbocharged L3-VDT engine. And it's not because it's the most attractive option. The thing is that in our secondary market to find any other engine is an extremely difficult task.

This motor gives such a difficult crossover a pleasant acceleration dynamics, but with reliability everything is not entirely smooth. So, the most common problems in the L3-VDT engine are:

1. Supercharger (turbine). The owners note that this unit fails very often, without showing any signs of a future breakdown. However, it is worth considering that many owners personally reduce the life of the supercharger by performing poor-quality maintenance;
2. Increased timing chain wear. Many owners agree that it can stretch in just 50 km;
3. Coupling VVT-i. If the other two malfunctions are difficult to identify or prevent, then everything is much easier with a clutch. The main sign of its failure is a crackling when starting the engine, and immediately before it breaks down, the sound of the engine becomes rough, more like a diesel engine.

Recommendation! For a gasoline turbo engine, an increased consumption of engine oil is characteristic. For L3-VDT, 1 liter per 1 km is considered the norm. It is very important to monitor the level of engine oil, because its lack entails increased wear not only of the turbine, but of all engine systems!